@article{DAN_1983_271_3_a20,
     author = {N. R. Sibgatullin},
     title = {Proof of the {Geroch} conjecture for electromagnetic and neutrino fields in general relativity},
     journal = {Doklady Akademii Nauk},
     pages = {603--607},
     publisher = {mathdoc},
     volume = {271},
     number = {3},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1983_271_3_a20/}
}