Papers https://www.base-search.net/ CS: http://dblp.uni-trier.de/ Philosophy: http://plato.stanford.edu/ Stat: http://www.ats.ucla.edu/stat/ ScienceDirect? http://www.sciencedirect.com/ http://www.goole.com/ Articles & Journals http://www.findarticles.com/ Math: http://www.ams.org/mathscinet/ Books http://gen.lib.rus.ec/ http://en.booksee.org/ http://bookzz.org/ Data http://www.tjsql.com/ ? https://workflowy.com/ https://www.archive.org/