Partial differential equations [proceedings of the Summer Seminar on Applied Mathematics ... held at the University of Colorado at Boulder, Colorado, June 23 to July 19, 1957] - Bers, Lipman 1914-1993; John, Fritz 1910-1994; Schechter, Martin 1930- (Interscience Publ., 1964)
"This is the third the Proceedings of the Summer Seminar on Applied Mathematics ... 1957"