Boulabiar, Karim. <br/><br/>
Positivity [electronic resource]   
by Karim Boulabiar, et al. 
 - Basel  Birkh user Verlag AG  2007 
<br/><br/> http://dx.doi.org/10.1007/978-3-7643-8478-4 
<br/><br/><label>ISBN: </label>9783764384784 
<br/><br/><label>Dewey Class. No.: </label>516.35  / (e-book)