Resende, Eliseu,  1929- <br/><br/>
Periodic solutions of certain ordinary non-linear differential equations. 

 - Rio de Janeiro:  IMPA/CNPq,  1963. 
 - 50 p.:  illus.,  27 cm. 
 - Notas de matemática (IMPA),  29. .
<br/><br/>Bibliography: p. 49-50. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Nonlinear.
<br/><br/><label>Dewey Class. No.: </label>515.35  / R433p