TY - BOOK AU - Wen,Guo Chun TI - Elliptic, hyperbolic and mixed complex equations with parabolic degeneracy T2 - Peking University series in mathematics SN - 9789812779427 PY - 2008/// CY - Singapore, Hackensack, NJ PB - World Scientific KW - Differential equations, Elliptic KW - Differential equations, Hyperbolic KW - Differential equations, Partial KW - Boundary value problems N1 - Includes bibliographical references (p. 415-427) and index ER -