"MATHEMATICS / Mathematical Analysis" . . "Equations aux dérivées partielles Second degré et types multiples." . . "Równania różniczkowe cząstkowe." . . "Équations aux dérivées partielles." . . "Ecuaciones diferenciales." . . "Diferansiyel denklemler, Kısmi." . . "Differential equations, Partial." . . "Differential equations, Partial" . "MATHEMATICS / Calculus" . . "Pergamon Press." . . . . "Equations of the mixed type" . "Equations of the mixed type"@en . "Equations of the Mixed Type compiles a series of lectures on certain fundamental questions in the theory of equations of mixed type. This book investigates the series of problems concerning linear partial differential equations of the second order in two variables, and possessing the property that the type of the equation changes either on the boundary of or inside the considered domain. Topics covered include general remarks on linear partial differential equations of mixed type; study of the solutions of second order hyperbolic equations with initial conditions given along the lines of parab."@en . . . . "Uravnenija smešannogo tipa" . . . . "Equations of the Mixed Type"@en . "Equations of the Mixed Type compiles a series of lectures on certain fundamental questions in the theory of equations of mixed type."@en . "<>" . "<>"@en . "Uravneniâ smešannogo tipa" . . . . . . . . . . . . . . . . . . . . . . . "[Уравнения смешанного типа.] Equations of the Mixed Type ... Translated by P. Zador, etc" . . . . . . . . . . . "Electronic books"@en . . . . . . "Equations of mixed type" . . . . . . . . . "Differentiaalvergelijkingen." . .