@article{CMFD_2006_20_a1,
     author = {P. B. Zhdanovich},
     title = {Free {Abelian} {Extensions} of $S_p${-Permutable} {Algebras}},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {69--103},
     publisher = {mathdoc},
     volume = {20},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2006_20_a1/}
}