Title: Methods of Mathematical Finance
Author: Ioannis Karatzas S. E. Shreve I. Karatzas
Publisher: Springer
Publication Date: 1998-08-01

Link: http://rapidshare.com/files/6645256/Karatzas_and_Shreve_-_Methods_of_mathematical_finance.pdf.html

or http://mihd.net/7jxqln

The file is very big, so I won't upload it to forum.