Бродин, Ю. І., and З. М. Бродин. “An Analysis of the Modern Approach to the Evaluation of Vagueness at Calibration of Measuring Facilities of Gas Expense and Amount”. METHODS AND DEVICES OF QUALITY CONTROL, no. 2(23), Oct. 2009, pp. 84-87, https://mpky.nung.edu.ua/index.php/mpky/article/view/368.