@article{MZM_2012_92_3_a13,
     author = {S. E. Stepanov and I. G. Shandra},
     title = {New {Characteristics} of {Infinitesimal} {Isometry} and {Ricci} {Solitons}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {459--462},
     publisher = {mathdoc},
     volume = {92},
     number = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2012_92_3_a13/}
}