@article{MZM_1974_15_1_a9,
     author = {Ya. A. Smirnickii and P. E. Sobolevskii},
     title = {Embedding theorems for fractional norms generated by an elliptic operator},
     journal = {Matemati\v{c}eskie zametki},
     pages = {91--100},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_1_a9/}
}