@article{MASLO_1978_28_2_a4,
     author = {Rubl{\'\i}k, Franti\v{s}ek},
     title = {On conditional expectations of vector valued variables},
     journal = {Mathematica slovaca},
     pages = {153--156},
     year = {1978},
     volume = {28},
     number = {2},
     mrnumber = {526853},
     zbl = {0384.60005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1978_28_2_a4/}
}