@article{ZNSL_1967_5_a9,
     author = {A. L. Treskunov},
     title = {Exact~$L_p$ estimates for a~class of degenerate second order equations of elliptic type},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {232--249},
     publisher = {mathdoc},
     volume = {5},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1967_5_a9/}
}