books.google.com - First published in 1950, this important book details the mathematical theory underlying the behaviour of plastic materials, especially metals. 'the author has done his work so well that it is difficult to see how it could be bettered. The book should rank for many years as an authoritative source of...http://books.google.com/books/about/The_Mathematical_Theory_of_Plasticity.html?id=Wy_kuQZzfdIC&utm_source=gb-gplus-shareThe Mathematical Theory of Plasticity