Portenko, N.I. <br/><br/>
Generalised diffusion process   
by N. I. Portenko 
 - Providence  American Mathematical Society  1990 
 - ix, 180p. 
 - Translations of Mathematical Monographs .
<br/><br/><label>ISBN: </label>0821845381 
<br/><br/><label>Dewey Class. No.: </label>519.233  / N90