Stoker, J. J <br/><br/>
Nonlinear Vibrations 
J. J. Stoker 
 - New York  Interscience Publishers, Inc  1950 
 - XIX, 273 p  ill  24 cm 
 - Pure and Applied Mathematics. A Series of Texts and Monographs  Volume II .
<br/><br/> Contine bibliografie si index