%0 Journal Article %A P. A. Novikov %A R. R. Valiev %T Hidden Markov models and neural networks in formation of investment portfolio %J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki %D 2018 %P 357-363 %V 160 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZKU_2018_160_2_a16/ %G en %F UZKU_2018_160_2_a16