Dear professionals, One of our researcher needs follwing articles which are not available with us. If any library has access to Historia Mathematica (Elsevier Science), kindly send us.   .. The Egyptians and Pythagorean triples Historia Mathematica, Volume 7, Issue 2, May 1980, Pages 186-187 Beatrice Lumpkin doi:10.1016/0315-0860(80)90037-3     2.. Methods and traditions of Babylonian mathematics : Plimpton 322, Pythagorean Triples, and the Babylonian Triangle Parameter Equations Historia Mathematica, Volume 8, Issue 3, August 1981, Pages 277-318 Jöran Friberg doi:10.1016/0315-0860(81)90069-0       3.An alternative to the Pythagorean rule? Reevaluating Problem 1 of cuneiform tablet BM 34 568 Garlos H.B. Gonçalvesa, ,Historia Mathematica Volume 35, Issue 3, August 2008, Pages 173-189 doi:10.1016/j.hm.2007.11.001   I look forward your kind help. Regards Yours Sincerely Rabishankar Giri GGS Indraprastha University Kashmere Gate, Delhi-6 rabishankar.giri@gmail.com girirs_75@yahoo.co.in   Try the new Yahoo! India Homepage. Click here. http://in.yahoo.com/trynew -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.