@article{DAN_1965_162_5_a7,
     author = {I. K. Lifanov},
     title = {On two problems posed by {Mardeshich}},
     journal = {Doklady Akademii Nauk},
     pages = {997--1000},
     publisher = {mathdoc},
     volume = {162},
     number = {5},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_162_5_a7/}
}