TY - JOUR AU - V. A. Bordovitsyn AU - I. M. Ternov TI - Invariant definition of relativistic spin states in classical and quantum theories with an external field JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1984 SP - 220 EP - 223 VL - 59 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1984_59_2_a4/ LA - ru ID - TMF_1984_59_2_a4 ER -