Spitzer Frank <br/><br/>
Principles of random walk 
Spitzer Frank 
 - NJ  Frank            1964 
 - xi,406p.  cm. 
 - University Series in Higher Mathematics .
<br/><br/> Bibliography P 395-400 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B2817, K4