books.google.com.au - Although Max Planck's famous lecture of 1900 gave quantum theory its essential form, the theory as he stated it was just the beginning. In this book, Professor van der Waerden collected 17 early papers which developed quantum theory into the form in which we know it. These papers appeared from 1917 to...http://books.google.com.au/books/about/Sources_of_quantum_mechanics.html?id=8KLMGqnZCDcC&utm_source=gb-gplus-shareSources of quantum mechanics