TY - BOOK AU - Roseau,Maurice TI - Asymptotic wave theory SN - 0444107983 (American Elsevier) PY - 1976/// CY - Amsterdam, New York PB - North-Holland Pub. Co., American Elsevier Pub. Co. KW - Wave-motion, Theory of KW - Wave equation KW - Asymptotic expansions N1 - Includes index; Bibliography p. 345-347 ER -