@article{ZNSL_2018_474_a11,
     author = {A. G. Kachurovskii},
     title = {The {Fejer} integrals and the von {Neumann} ergodic theorem with continuous time},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {171--182},
     year = {2018},
     volume = {474},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2018_474_a11/}
}