@article{TMF_1989_79_3_a0,
     author = {A. Yu. Artem'ev},
     title = {Classification of~quantum {Markov} master equations of~spin systems with respect to~the symmetry groups of~the environment},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {323--333},
     year = {1989},
     volume = {79},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1989_79_3_a0/}
}