For citations:

Pirakov F.J., Klishin A.P., Eremina N.L., Klyzhko E.N. Development and Application of the e-Portfolio System in High School. Vestnik NSU. Series: Information Technologies. 2019;17(4):87-100. (In Russ.) https://doi.org/10.25205/1818-7900-2019-17-4-5-87-100