@article{TMF_1988_75_3_a13,
     author = {N. P. Bogolyubov},
     title = {Phase transition of the first kind with respect to the density in a~model of spontaneous breaking of chiral symmetry},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {465--472},
     publisher = {mathdoc},
     volume = {75},
     number = {3},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1988_75_3_a13/}
}