Bubela, Tetiana, Mykola Mykyychuk, Alla Hunkalo, Oksana Boyko, and Olena Basalkevych. “A Study of Uncertainty of Expert Measurement Results in the Quality Management System”. Eastern-European Journal of Enterprise Technologies 3, no. 3(81) (June 28, 2016): 4–11. Accessed May 19, 2022. http://journals.uran.ua/eejet/article/view/71607.