@article{TMF_1976_28_1_a9,
     author = {E. A. Solov'ev},
     title = {Nonadiabatic transitions when there is pseudocrossing of a~group of terms},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {115--122},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1976_28_1_a9/}
}