@article{DAN_1962_144_5_a4,
     author = {V. E. Govorov},
     title = {Rings over which flat modules are free},
     journal = {Doklady Akademii Nauk},
     pages = {965--967},
     year = {1962},
     volume = {144},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_5_a4/}
}