@article{MZM_1977_21_4_a8,
     author = {V. A. Kondrat'ev and S. D. \`Eidel'man},
     title = {The membership of solutions of quasielliptic equations to space $L_p$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {519--524},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_4_a8/}
}