@article{IVM_2009_10_a7,
     author = {S. A. Grigoryan and A. F. Salakhutdinov},
     title = {$C^*$-algebras generated by semigroups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {68--71},
     publisher = {mathdoc},
     number = {10},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2009_10_a7/}
}