Roytvarf, Alexander A. Thinking in problems : how mathematicians find creative solutions / Alexander A. Roytvarf. - New York : Birkhauser, c2013. - xxxvii, 405 p. : ill. ; 24 cm. ISBN: 9780817684051 (alk. paper) 0817684050 (alk. paper) 9780817684068 (ebk.) LCCN: 2012950315 Subjects--Topical Terms: Mathematics--Philosophy.Mathematical analysis.Reasoning.Logic. LC Class. No.: QA9 / .R777 2013 Dewey Class. No.: 370.152 / RAT