@article{MZM_1987_42_2_a13,
     author = {E. G. Belov and A. G. Chentsov},
     title = {Certain properties of two-valued measures and the conditions of universal integrability},
     journal = {Matemati\v{c}eskie zametki},
     pages = {288--297},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1987_42_2_a13/}
}