@article{MZM_1976_20_4_a6,
     author = {I. I. Tseitlin},
     title = {The extreme points of the unit ball of certain spaces of operators},
     journal = {Matemati\v{c}eskie zametki},
     pages = {521--527},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1976_20_4_a6/}
}