Stamatis, D. H. Six sigma and beyond: problem solving and basic mathematics / D. H. Stamatis - Boca Raton : St Lucie Press, 2001 - 366 p. ISBN: 1574443100 Subjects--Topical Terms: Six sigmaQuality control-problem solvingProduction management-statistical methods Dewey Class. No.: 658.562 / S4S8