@article{VCHGU_2009_11_a1,
     author = {V. E. Fedorov},
     title = {Properties od pseudoresolvents and conditions of the existence of degenerate operator semigroups},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {12--19},
     publisher = {mathdoc},
     number = {11},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_2009_11_a1/}
}