Periodic solutions of certain ordinary non-linear differential equations.
Series: Notas de matemática -- no. 29; Notas de matemática (Rio de Janeiro, Brazil) -- no. 29.
Publisher: Instituto de Matemática Pura e Aplicada do Conselho Nacional de Pesquisas
Published: 1963
Place of publication: Rio de Janeiro
Language: eng
Number of pages: 50
Subjects: Differential equations, Nonlinear
Notes: Bibliography: p. 49-50.