Spitzer, Frank <br/><br/>
Principles of random walk/2nd ed. 

 - 2nd ed. 
 - New York  Springer-Verlag  1964 
 - 408p. 
<br/><br/><label>ISBN: </label>0-387-90150-7 
<br/><br/><label>Subjects--Index Terms: </label>Random walks (mathematics) 
<br/><br/><label>Dewey Class. No.: </label>519.218  / SPI