Helal, Abdelsalam A. <br/><br/>
Any Time, Anywhere Computing  Mobile Computing Concepts and Technology 

 -  Kluwer Academic Publishers  1999. 
 - 187 
<br/><br/><label>ISBN: </label>0792386108 
<br/><br/><label>Dewey Class. No.: </label>5.133  / N99