Li, Lin. <br/><br/>
Solutions of Nonlinear Differential Equations :  Existence Results via the Variational Approach / 
Lin Li, Shu-Zhi Song. 
 - New Jersey :  World Scientific,  2016. 
 - XIV, 345 s. ;  23 cm. 
 - (Trends in Abstract and Applied Analysis)  vol. 3  ISSN 2424-8746 .
<br/><br/>bibliogr. 
<br/><br/><label>ISBN: </label>9789813108608 
<br/><br/><label>Uniwersalna Klasyfikacja Dziesiętna: </label> 517.9