@article{DAN_1961_139_1_a28,
     author = {B. A. Popovkin and A. V. Novoselova},
     title = {An investigation of the lead selenite~-- lead oxide system},
     journal = {Doklady Akademii Nauk},
     pages = {117--119},
     publisher = {mathdoc},
     volume = {139},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_1_a28/}
}