From the reviews: "In this book an alternative approach to optimal stopping problems is presented. Its basic ideas and techniques are demonstrated on a much simpler level ... . Necessary notations and results of the theory of stochastic processes are introduced in a piece meal basis when they are needed. Certainly, the reading of the book is easier for readers ... . The first three parts of the book can be used as an introductory course, and the rest of the book for an advanced course." (Klaus Ehemann, Zentralblatt MATH, Vol. 1131 (9), 2008)