@article{CMA_2015_98_a7,
     author = {V. L. Khatskevich},
     title = {On extremal properties of mean values of continuous random variables and relations between them},
     journal = {Contemporary Mathematics and Its Applications},
     pages = {149--157},
     publisher = {mathdoc},
     volume = {98},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMA_2015_98_a7/}
}