@article{DAN_1972_204_2_a17,
     author = {B. M. Fain},
     title = {Exciton condensation in momentum space under the action of optical pumping},
     journal = {Doklady Akademii Nauk},
     pages = {322--323},
     publisher = {mathdoc},
     volume = {204},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_204_2_a17/}
}