@article{TMF_1987_73_1_a10,
     author = {L. A. Pastur and B. A. Khoruzhenko},
     title = {Phase transitions in quantum models of rotators and ferroelectrics},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {111--124},
     year = {1987},
     volume = {73},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1987_73_1_a10/}
}