@article{TMF_1987_70_2_a12,
     author = {I. E. Andrushkevich and G. V. Shishkin},
     title = {Criteria of separability of the variables in the {Dirac} equation in gravitational fields},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {289--302},
     publisher = {mathdoc},
     volume = {70},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1987_70_2_a12/}
}