@article{DE_1976_12_2_a4,
     author = {I. D. Evzerov and P. E. Sobolevskii},
     title = {The resolvent and fractional powers of ordinary differential operators in spaces of smooth functions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {227--233},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_2_a4/}
}