О.О. Zakharkin, L.L. Hrytsenko, L.S. Zakharkina, и Iu.O. Myroshnychenko, «COMPARATIVE ANALYSIS OF RETURN AND VOLATILITY OF THE KAZAKH AND UKRAINIAN STOCK MARKET SUBJECT TO THE INVESTMENT TIME HORIZON1», ВНР, вып. 3, сс. 133–138, окт. 2021.