Chabrowski, J. (1997). Variational methods for potential operator equations: With applications to nonlinear elliptic equations. Walter de Gruyter.
Lua i Stíl Chicago (17ú heag.)Chabrowski, Jan. Variational Methods for Potential Operator Equations: With Applications to Nonlinear Elliptic Equations. New York: Walter de Gruyter, 1997.
Lua MLA (9ú heag.)Chabrowski, Jan. Variational Methods for Potential Operator Equations: With Applications to Nonlinear Elliptic Equations. Walter de Gruyter, 1997.
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