TY - BOOK AU - Loud,W.S. TI - Periodic solutions of perturbed second-order autonomous equations T2 - Memoirs of the American Mathematical Society, SN - 9780821899915 (online) AV - QA3 .A57 no. 47 PY - 1964/// CY - Providence, R.I. PB - American Mathematical Society KW - Differential equations KW - Perturbation (Mathematics) N1 - Includes bibliographical references; Part I: Preliminaries; Part II: Perturbation of a constant solution; Part III: Perturbation of a nonconstant solution; Part IV: Autonomous perturbing terms; Access is restricted to licensed institutions; Electronic reproduction; Providence, Rhode Island; American Mathematical Society; 2012 UR - http://www.ams.org/memo/0047 UR - http://dx.doi.org/10.1090/memo/0047 ER -