Fraenkel, L. E. (2000). An introduction to maximum principles and symmetry in elliptic problems. Cambridge: Cambridge University Press.
Παραπομπή Chicago StyleFraenkel, L. E. An Introduction to Maximum Principles and Symmetry in Elliptic Problems. Cambridge: Cambridge University Press, 2000.
Παραπομπή MLAFraenkel, L. E. An Introduction to Maximum Principles and Symmetry in Elliptic Problems. Cambridge: Cambridge University Press, 2000.
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