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@article{FAA_1988_22_2_a4, author = {V. V. Sokolov}, title = {Pseudosymmetries and differential substitutions}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {47--56}, publisher = {mathdoc}, volume = {22}, number = {2}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1988_22_2_a4/} }
V. V. Sokolov. Pseudosymmetries and differential substitutions. Funkcionalʹnyj analiz i ego priloženiâ, Tome 22 (1988) no. 2, pp. 47-56. http://geodesic.mathdoc.fr/item/FAA_1988_22_2_a4/