@article{MV_1967_19_4_a2,
     author = {R. U\v{s}an},
     title = {Ob odnoj 2-arnoj operatornoj bimediyal'noj algebre},
     journal = {Matemati\v{c}ki vesnik},
     pages = {367 },
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1967},
     url = {http://geodesic.mathdoc.fr/item/MV_1967_19_4_a2/}
}