@article{AA_1996_8_4_a4,
     author = {N. Ya. Kruglyak},
     title = {Smooth analogues of the {Calder\'on{\textendash}Zygmund} decomposition, quantitative covering theorems and the $K$-functional for the couple $(L_q,W_p^k)$},
     journal = {Algebra i analiz},
     pages = {110--160},
     year = {1996},
     volume = {8},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1996_8_4_a4/}
}