@article{AA_1999_11_1_a2,
     author = {V. A. Kostin},
     title = {On the {Solomyak--Yosida} theorem for analytic semigroups},
     journal = {Algebra i analiz},
     pages = {118--140},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1999_11_1_a2/}
}