Wen (School of Mathematical Science, Peking University, Beijing) investigates general boundary value problems for first-and second-order linear and quasilinear complex equations of hyperbolic and mixed type, using complex analytical methods throughout. Mixed complex equations are included in the quasilinear case, boundary conditions are considered in the general oblique derivative case, and multiple connected domains are considered in detail. The book can be used as a reference for graduate students of partial differential equations and complex analysis and researchers in analysis and mathematical physics