@article{IVM_2021_8_a1,
     author = {A. M. Bikchentaev and Kh. Fawwaz},
     title = {Differences and commutators of idempotents in $C^*$-algebras},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {16--26},
     publisher = {mathdoc},
     number = {8},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2021_8_a1/}
}