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@article{DE_1973_9_2_a3, author = {I. D. Evzerov and P. E. Sobolevskii}, title = {Fractional powers of ordinary differential operators}, journal = {Differencialʹnye uravneni\^a}, pages = {228--240}, publisher = {mathdoc}, volume = {9}, number = {2}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1973_9_2_a3/} }
I. D. Evzerov; P. E. Sobolevskii. Fractional powers of ordinary differential operators. Differencialʹnye uravneniâ, Tome 9 (1973) no. 2, pp. 228-240. http://geodesic.mathdoc.fr/item/DE_1973_9_2_a3/