@article{DAN_1960_130_2_a7,
     author = {P. E. Sobolevskii},
     title = {The use of fractional powers of self-adjoined operators in the investigation of some non-linear differential equations in {Hilbert} space},
     journal = {Doklady Akademii Nauk},
     pages = {272--275},
     publisher = {mathdoc},
     volume = {130},
     number = {2},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_130_2_a7/}
}