@article{MZM_1970_7_2_a1,
     author = {O. V. Besov},
     title = {Estimates of derivatives in a mixed $L_p$-norm on a domain and an extension of functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {147--154},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1970_7_2_a1/}
}