@article{FAA_2003_37_4_a12,
     author = {T. V. Shulman},
     title = {On {Sums} of {Projections} in $C^*${-Algebras}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {91--92},
     publisher = {mathdoc},
     volume = {37},
     number = {4},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2003_37_4_a12/}
}