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@article{FAA_1969_3_2_a2, author = {I. M. Gel'fand and M. I. Graev and Z. Ya. Shapiro}, title = {Differential forms and integral geometry}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {24--40}, publisher = {mathdoc}, volume = {3}, number = {2}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1969_3_2_a2/} }
I. M. Gel'fand; M. I. Graev; Z. Ya. Shapiro. Differential forms and integral geometry. Funkcionalʹnyj analiz i ego priloženiâ, Tome 3 (1969) no. 2, pp. 24-40. http://geodesic.mathdoc.fr/item/FAA_1969_3_2_a2/