books.google.co.uk - Number Theory in Science and Communication is an introduction for non-mathematicians. The book stresses intuitive understanding rather than abstract theory and highlights important concepts such as continued fractions, the golden ratio, quadratic residues and Chinese remainders, trapdoor functions, pseudoprimes...http://books.google.co.uk/books/about/Number_Theory_of_in_Science_and_Communic.html?id=GyE6XjIzSCwC&utm_source=gb-gplus-shareNumber Theory of in Science and Communication
