Parthasarathy, P. R. Lenin, R. B. <br/><br/>
Birth and Death Processes(BDP) : Models with Applications 

 - Ohio  American Sciences Press  2004 
 - p.212 
<br/><br/><label>ISBN: </label>0935950559 
<br/><br/><label>Dewey Class. No.: </label>519.233 P20B