books.google.com - This popular text, publishing Spring 1999 in its Second Edition, introduces the mathematics underlying the pricing of derivatives. The increase of interest in dynamic pricing models stems from their applicability to practical situations: with the freeing of exchange, interest rates, and capital controls,...http://books.google.com/books/about/An_Introduction_to_the_Mathematics_of_Fi.html?id=mWzMpAex1_kC&q=probability+measure&utm_source=gb-gplus-shareAn Introduction to the Mathematics of Financial Derivatives