1. State Standard ISO 6658-2016. Sensory analysis – Methodology – General guidance, IDT. Moscow, Standartinform Publ., 2016. 20 (in Russian).
2. State Standard ISO 5492–2014. Sensory Analysis. Vocabulary. Moscow, Standartinform Publ., 2015. 50 (in Russian).
3. Lovkis Z. V., Morgunova H. M., Shevchenko V. I., Davydova H. A. (2018) Sensory Analysis of Quality of Food Products. Requirements to Assessors. Food Industry: Science and Technology, 11 (1), 13–19 (in Russian).
4. State Standard ISO 8586–2015. Sensory Analysis. General Guidelines for the Selection, Training and Monitoring of Selected Assessors and Expert Sensory Assessors. Moscow, Standartinform Publ., 2015. 25 (in Russian).
5. Hubbard D. W. (2010) How to Measure Anything: Finding the Value of Intangibles in Business. 2rd ed. New York, John Wiley & Sons. 432. https://doi.org/10.1002/9781118983836.