Gustafson, K. E. (1999). Introduction to Partial Differential Equations and Hilbert Space Methods (3rd ed.). Dover.
Chicago-стиль цитированияGustafson, Karl E. Introduction to Partial Differential Equations and Hilbert Space Methods. 3rd ed. Dover, 1999.
MLA-цитированиеGustafson, Karl E. Introduction to Partial Differential Equations and Hilbert Space Methods. 3rd ed. Dover, 1999.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.