Schafer, P. (1988). Maximum principles and eigenvalue problems in partial differential equations. Longman.
Citación estilo ChicagoSchafer, P.W. Maximum Principles and Eigenvalue Problems in Partial Differential Equations. Longman, 1988.
Cita MLASchafer, P.W. Maximum Principles and Eigenvalue Problems in Partial Differential Equations. Longman, 1988.
Warning: These citations may not always be 100% accurate.