Arnold, S. E. (2003). In Search of ...The Good Search: The Invisible Elephant. Searchers, 11(3). Retrieved from http://www.infotoday.com/searcher/mar03/arnold.shtml

Arnold, S. E., & Colson, M. (2000). The “R” Technology Revolution: Relationship, Research Revenue. Searchers, 8(9). Retrieved from http://www.infotoday.com/searcher/oct00/arnold&colson.htm

Arnold, S. E., & Wells, T. (2005). The Future of Search? It’s Academic. Retrieved from http://web.archive.org/web/20060507222504/http://www.arnoldit.com/articles/futureSeachDec2002.html

Berners-Lee, T. (2000a). A Little History of the World Wide Web. Retrieved from http://www.w3.org/History.html

Berners-Lee, T. (2000b). Weaving the Web: The original design and ultimate destiny of the World Wide Web, by its inventor. HarperBusiness.
Brin, S., & Page, L. (2012). Reprint of: The anatomy of a large-scale hypertextual web search engine. Computer Networks, 56(18), 3825–3833. https://doi.org/10.1016/j.comnet.2012.10.007
Burnard, L. (1987). CAFS: A New Solution to an Old Problem. Literary and Linguistic Computing, 2(1), 7–12. https://doi.org/10.1093/llc/2.1.7
Christoph G. Thomas, G. F., Thomas, C. G., Fischer, G., Christoph G. Thomas, G. F., Thomas, C. G., & Fischer, G. (1996). Using Agents to Improve the Usability and Usefulness of the World-Wide Web. In Proceedings of the Fifth International Conference in User Modeling (UM-96). West Newton: User Modeling (pp. 5–12). Kailua-Kona, Hawai. Retrieved from http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.299.838&rank=1 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.299.838 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.299.838%7B&%7Drank=1
Crestani, F. (1993). An adaptive information retrieval system based on Neural Networks (pp. 732–737). Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-56798-4_229
Edosomwan, J., & Edosomwan, T. O. (2010). Comparative analysis of some search engines. South African Journal of Science, 106(11–12), 1–4. https://doi.org/10.4102/sajs.v106i11/12.169
Franklin, C. (n.d.). How Internet Search Engines Work. Retrieved from http://computer.howstuffworks.com/internet/basics/search-engine1.htm
Goodwin, D. (2013). How Search Engines are Celebrating Valentine’s Day 2013. Retrieved from http://searchenginewatch.com/sew/news/2244139/how-search-engines-are-celebrating-valentine-s-day-2013
Gromov, G. R. (n.d.). History of The Internet & World Wide Web: The Roads and Crossroads of Internet History. Retrieved from http://netvalley.com/intval1.html
Gunn, H. (2006). Searching the Web with multisearch interfaces. Teacher Librarian, 34(2), 64–5.
Jansen, B. J., Liu, Z., Weaver, C., Campbell, G., & Gregg, M. (2011). Real time search on the web: Queries, topics, and economic value. Information Processing & Management, 47(4), 491–506. https://doi.org/10.1016/j.ipm.2011.01.007
Jisc Digital Media. (2008a). Review of Audio Search Engines. Retrieved from http://www.jiscdigitalmedia.ac.uk/guide/review-of-audio-search-engines
Jisc Digital Media. (2008b). Review of Image Search Engines. Retrieved from http://www.jiscdigitalmedia.ac.uk/guide/review-of-image-search-engines#limitations
Jisc Digital Media. (2008c). Review of Moving Image Search Engines. Retrieved from http://www.jiscdigitalmedia.ac.uk/guide/review-of-moving-image-search-engines
Jisc Digital Media. (2013). Review of Video Search Engines. Retrieved from http://www.jiscdigitalmedia.ac.uk/guide/review-of-video-search-engines
Kimmel, S. (1996). Robotgenerated databases on the World Wide Web. Database, 19(1).
Lewandowski, D. (2006). The freshness of web search engine databases (Vol. 32).
Lewandowski, Dirk. (2005). Web Information Retrieval: Technologien zur Informationssuche im Internet. (M. Ockenfeld, Ed.) (Reihe Info). Deutsche Gesellschaft für Informationswissenschaft und Informationspraxis e.V. Retrieved from http://www.durchdenken.de/lewandowski/web-ir/
Lewandowski, Dirk. (2008). Spezialsuchmaschinen. In Dirk Lewandowski (Ed.), Handbuch Internet-Suchmaschinen: Nutzerorientierung in Wissenschaft und Praxis (pp. 53–69). Heidelberg: Akademische Verlagsgesellschaft AKA.
Lewandowski, Dirk. (2009). Handbuch Internet-Suchmaschinen. Nutzerorientierung in Wissenschaft und Praxis. (Dirk Lewandowski, Ed.). Heidelberg: Akademische Verlagsgesellschaft Aka.
Lewandowski, Dirk. (2011). Evaluierung von Suchmaschinen. In Dirk Lewandowski (Ed.), Handbuch Internet-Suchmaschinen 2 (pp. 203–228). AKA Verlag.
Lewandowski, Dirk (Ed.). (2013a). Handbuch Internet-Suchmaschinen 3: Suchmaschinen zwischen Technik und Gesellschaft. Akademische Verlagsgesellschaft Aka.
Lewandowski, Dirk. (2013b). Suchmaschinen. In R. Kuhlen, W. Semar, & D. Strauch (Eds.), Grundlagen der praktischen Information und Dokumentation (6. Aufl., pp. 495–508). Berlin: Walter de Gruyter. Retrieved from http://www.degruyter.com/viewbooktoc/product/174371
Lewandowski, Dirk, & Mayr, P. (2007). Exploring the academic invisible web, 13.
Machilll, M., Lewandowski, D., & Karzauninkat, S. (2005). Journalistische Aktualität im Internet. Ein Experiment mit den “News-Suchfunktionen” von Suchmaschinen. In Suchmaschinen: Herausforderungen für die Medienpolitik (pp. 105–164). Vistas.
Mishne, G., & de Rijke, M. (2006). A Study of Blog Search. In Advances in Information Retrieval - 28th European Conference on IR Research - ECIR 2006 (pp. 289–301). London, UK: Springer.
Notess, G. R. (1998). Alexa: Web archive, advisor, and statistician. Online, 22(3), 29–30. https://doi.org/10.1371/journal.pgen.1002155
Olsen, S. (2001). Eric Schmidt’s lucky search - Tech News - CNET.com. Retrieved from http://web.archive.org/web/20010918003546/http://news.cnet.com/news/0-1014-201-6807878-0.html
Raghavulu, V. V., & Mallikarjuna, S. B. (2012). Methods for seeking of information on the WWW. International Journal of Scientific and Research Publications, 2(3), 1–4.
Resch, O. (2014). Internetsuche für wissenschaftliche Arbeiten am Beispiel von serioussearch.de. In T. . Barton, B. . Erdlenbruch, M. . Guckert, F. . Herrmann, C. . Müller, & H. Ritz (Eds.), Prozesse, Technologie, Anwendungen, Systeme und Management. Angewandte Forschung in der Wirtschaftsinformatik. Tagungsband zur wissenschaftlichen Fachtagung am 08.09.2014 anlässlich der 27. Jahrestagung des Arbeitskreises Wirtschaftsinformatik an Fachhoch (pp. 188–95). Berlin: News & Media Berlin. Retrieved from https://campus4u.hwr-berlin.de/qisserver/rds?state=verpublish&status=init&vmfile=no&moduleCall=webInfo&publishConfFile=webInfoPublikation&publishSubDir=publikation&publikationsart=proceeding&publikation.publikationid=3475&menuid=&publishid=3475&topitem=research&subitem=publikation&monographien=y&container=Publikation2014&jahr=2014
Shakes, J., Langheinrich, M., & Etzioni, O. (1997). DYNAMIC REFERENCE SIFTING: A CASE STUDY IN THE HOMEPAGE DOMAIN. In Proceedings of the Sixth International World Wide Web Conference (pp. 189–200). Retrieved from https://homes.cs.washington.edu/ etzioni/papers/paper.html
Shoukat, I. A., & Iftikhar, M. (2011). Performance analysis of 5A â?? s web robots. Scientific Research and Essays, 6(12), 2564–2577. https://doi.org/10.5897/SRE11.634
Sonnenreich, W. (1998). A History of Search Engines. In WEB DEVELOPER.COM GUIDE TO SEARCH ENGINES. Wiley. Retrieved from http://www.wiley.com/legacy/compbooks/sonnenreich/webdev/history.html
Sonnenreich, W., & Macinta, T. (1998). WEB DEVELOPER.COM GUIDE TO SEARCH ENGINES. Wiley. Retrieved from http://www.wiley.com/legacy/compbooks/sonnenreich/webdev/index.htm
Spink, A., Jansen, B. J., Blakely, C., & Koshman, S. (2006). A study of results overlap and uniqueness among major Web search engines. Information Processing and Management, 42(5), 1379–1391. https://doi.org/10.1016/j.ipm.2005.11.001
Stewart, W. (2000). The Internet. Retrieved from http://www.livinginternet.com/
Sullivan, D. (2001a). Image Search Faces Renewed Legal Challenge. The Search Engine Report. Retrieved from http://web.archive.org/web/20010930192917/http://searchenginewatch.com/sereport/01/08-images.html
Sullivan, D. (2001b). The End For Search Engines? The Search Engine Report, (50). Retrieved from http://web.archive.org/web/20010930191155/http://searchenginewatch.com/sereport/01/02-theend.html
Sullivan, D. (2003). Where Are They Now? Search Engines We’ve Known & Loved. Retrieved from http://searchenginewatch.com/sew/study/2064954/where-are-they-now-search-engines-weve-known-loved
Sullivan, D. (2009). What Is Real Time Search? Definitions & Players. Retrieved from http://searchengineland.com/what-is-real-time-search-definitions-players-22172
Tang, W. (1999). Search Engine Survey. Retrieved from http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.36.2503
Thelwall, M., & Hasler, L. (2007). Blog search engines. Online Information Review, 31(4), 467–479. https://doi.org/10.1108/14684520710780421
Tóth, E. (2006). Exploring the capabilities of English and Hungarian search engines for various queries. Libri, 56(1), 38–47. https://doi.org/10.1515/LIBR.2006.38
UC Berkeley Library. (n.d.). Finding Information on the Internet: A Tutorial. Retrieved from http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/FindInfo.html
Underwood, L. (2004). A Brief History of Search Engines. Retrieved from http://www.webreference.com/authoring/search_history/index.html
Vensky, H. (2010). Klimaschutz: Öko-Suchen schützen das Gewissen mehr als den Wald. ZEIT ONLINE. Retrieved from http://www.zeit.de/digital/internet/2010-06/ecosia-suchmaschine-oekologisch-klima
Wall, A. (n.d.-a). History of Search Engines: From 1945 to Google Today. Retrieved from http://www.searchenginehistory.com/
Wall, A. (n.d.-b). Search Engine History. Retrieved from http://www.searchenginehistory.com/#search-players

Websites

Klug Suchen! - Ihr Weg zur richtigen Information.: http://www.klug-suchen.de/

Phil Bradley's website - Making the net easier: http://www.philb.com/

Search Engine Journal: http://www.searchenginejournal.com/

Search Engine History: http://www.searchenginehistory.com

Search Engine Land: http://www.searchengineland.com/

Search Engine Roundtable: http://www.seroundtable.com/

Search Engine Showdown: http://www.searchengineshowdown.com/

Search Engine Watch: http://searchenginewatch.com/

Sucharchiv.com: http://www.suchmaschinenindex.de/

Suchlexikon, Das: http://www.suchlexikon.de This german web site collects information about search engines.

Suchfiebel 2.0, Die: http://www.suchfibel.de This german web site collects information about search engines.

Web Directoties: http://web-directories.ws/ This web site collects information about Web Directories.

IT History Society (ITHS): http://ithistory.org/index.php "The IT History Society (ITHS) is an international group of over 600 members working together to document, preserve, catalog, and research the history of Information Technology (IT). Comprised of individuals, academicians, corporate archivists, curators of public institutions, and hobbyists, ..."

Search Engine Terms: http://www.cadenza.org/search_engine_terms/index.htm "This glossary or list of search engine terms was originally designed to complement the discussions which took place on the I-Search Digest discussion list."

Internet Society: http://www.internetsociety.org "By connecting the world, working with others, and advocating for equal access to the Internet, the Internet Society strives to make the world a better place."