@article{MZM_2019_105_5_a0,
     author = {A. M. Bikchentaev},
     title = {Trace and {Differences} of {Idempotents} in $C^*${-Algebras}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {647--655},
     publisher = {mathdoc},
     volume = {105},
     number = {5},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2019_105_5_a0/}
}