@article{DAN_1967_174_1_a4,
     author = {V. V. Laricheva and M. V. Rein},
     title = {Averaging with respect to the mean on a finite interval of time},
     journal = {Doklady Akademii Nauk},
     pages = {21--23},
     publisher = {mathdoc},
     volume = {174},
     number = {1},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_174_1_a4/}
}