@article{DAN_1970_192_4_a17,
     author = {E. B. Gliner},
     title = {Vacuum-like state of a medium and {Friedmann} cosmology},
     journal = {Doklady Akademii Nauk},
     pages = {771--774},
     year = {1970},
     volume = {192},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_192_4_a17/}
}