(2020). . , 54(2), 117-122. doi: 10.22059/ijmge.2019.267417.594762
. "". , 54, 2, 2020, 117-122. doi: 10.22059/ijmge.2019.267417.594762
(2020). '', , 54(2), pp. 117-122. doi: 10.22059/ijmge.2019.267417.594762
. , 2020; 54(2): 117-122. doi: 10.22059/ijmge.2019.267417.594762


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