Hyers Donald H Stability of functional equations in several variables - Boston Birkhauser 1998 - 313p. cm. - Progress in nonliner differential equations and their applications; 34 . Bibliographical references 290-305p; Index 307-313p ISBN: 081764024X (hbd) Standard No.: 5795 Source: Shankar, Textual Subjects--Topical Terms: Functional analysisMathematics Dewey Class. No.: B43, N8