TY - JOUR AU - A. V. Chubukov TI - Orientational phase transitions in quantum spin systems with two-component order parameter JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1984 SP - 145 EP - 153 VL - 60 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1984_60_1_a13/ LA - ru ID - TMF_1984_60_1_a13 ER -