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  Digital Library of Mathematical Functions (dlmf.nist.gov) ►
An online project at the National Institute of Standards and Technology to develop a major resource of mathematical reference data for special functions and their applications. 
  EMIS (www.emis.de)The European Mathematical Information Service is maintained by FIZ Karlsruhe / Zentralblatt MATH. It contains Elibrary (journals, proceedings etc), information on conferences, congresses, and literature database. 
  MacTutor History of Mathematics archive (turnbull.mcs.stand.ac.uk) ► A resource of the School of Mathematics and Statistics from the University of St Andrews, Scotland, that offers a wide range of mathematics associated materials (the history of mathematics, biographies of famous mathematicians etc.). 
  Math.ru (www.math.ru) ►The Russian electronic library Math.ru is a collection of textbooks, journals and leaflets on mathematics. 
  The MathDiss database (www.sub.unigoettingen.de)An Internetbased access to digital mathematical dissertations, provided by the Gцttingen State and University Library in Germany. This database is part of the MathDiss International project, funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Council). 
  Wolfram MathWorld (mathworld.wolfram.com)The Web's most extensive mathematics resource. It contains materials on history and terminology, discrete mathematics, calculus and analysis, etc. 