@article{DAN_1971_200_3_a7,
     author = {A. V. Pogorelov},
     title = {On the regularity of generalized solutions of the equation 
},
     journal = {Doklady Akademii Nauk},
     pages = {534--537},
     publisher = {mathdoc},
     volume = {200},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_3_a7/}
}