Partial Differential Equations and Calculus of Variations Lecture Notes in Mathematics, nr. 1357 Editat de Stefan Hildebrandt et al. 9 noi 1988 Paperback Preț: 414.36 lei 6-8 săpt.
Initial Boundary Value Problems in Mathematical Physics Autor Rolf Leis apr 1986 Paperback Preț: 313.40 lei 6-8 săpt.