@article{TMF_1992_90_1_a8,
     author = {A. N. Kvinikhidze and A. M. Khvedelidze},
     title = {Pair-interaction approximation in the equations of quantum field theory for a~four-body system},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {95--112},
     publisher = {mathdoc},
     volume = {90},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1992_90_1_a8/}
}