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@article{FAA_1973_7_4_a11, author = {L. B. Zelenko}, title = {Friedrichs extension of some nonlinear operators}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {83--84}, publisher = {mathdoc}, volume = {7}, number = {4}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a11/} }
L. B. Zelenko. Friedrichs extension of some nonlinear operators. Funkcionalʹnyj analiz i ego priloženiâ, Tome 7 (1973) no. 4, pp. 83-84. http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a11/