TY - BOOK AU - Nayfeh,Ali Hasan TI - Perturbation methods T2 - Wiley classics library SN - 0471399175 (pbk.) U1 - 515.35 22 PY - 2004///] CY - Weinheim PB - Wiley-VCH Verlag GmbH & Co. KGaA KW - Perturbation (Mathematics) KW - BUEsh KW - Asymptotic expansions KW - Differential equations KW - Numerical solutions KW - ENGELC KW - March2015 KW - Reading book N1 - Includes bibliographical references and index ER -