@article{FPM_2005_11_2_a4,
     author = {A. A. Gvaramiya and B. I. Plotkin},
     title = {Action-type axiomatizable classes of group representations},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {73--85},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2005_11_2_a4/}
}