@article{MZM_2008_84_2_a1,
     author = {A. G. Baskakov},
     title = {Linear {Relations} as {Generators} of {Semigroups} of {Operators}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {175--192},
     publisher = {mathdoc},
     volume = {84},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2008_84_2_a1/}
}