Loud, W. S <br/><br/>
Periodic solutions of perturbation second-order autonomous equations 
by W. S. Loud 
 - Providence, Rhode Island  American Mathematical Society  1964 
 - 133 p  24 cm 
 - Seria Memoirs of the American Mathematical Society  Nr. 47 .
<br/><br/> Contine bibliogr 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecuatii diferentiale ordinare<br/>Teoria oscilatiilor<br/>Sisteme de ecuatii
<br/><br/><label>Dewey Class. No.: </label>517.9 517.926