[1]
M. Sydorov, S. Salnikova, Y. Savelyev, and O. Oliinyk, “Modified SERVPERF and Normalized SERVQUAL Models in Estimation of Service Quality in Higher Educational Institutes”, sociostudios, no. 1(16), pp. 29–39, Jun. 2020, doi: 10.29038/2306-3971-2020-01-29-39.