Tashyan, Mariam S., and Seyran R. Suvaryan. “THE USE OF MATRICES IN SERVICE MARKETING RESEARCH”. Proceedings of the YSU C: Geological and Geographical Sciences 57, no. 1-2 (260) (July 13, 2023): 68–76. Accessed November 21, 2024. https://journals.ysu.am/index.php/proceedings-geol-geogr/article/view/vol57_no1-2_2023_pp068-076.