Heydari, M., Lai, K. K. and Xiaohu, Z. (2019) “IMPACT OF IMPLEMENTATION OF THE EUROPEAN FOUNDATION FOR QUALITY MANAGEMENT EXCELLENCE MODEL AND ISO ON ORGANIZATIONS` PERFORMANCE BASED ON MATHEMATICAL MODELS”, Proceedings of National Aviation University, 80(3), pp. 92–114. doi: 10.18372/2306-1472.80.14278.