Golikov, Alexander. 2017. “Changeable and Unchangeable in Social: Towards to Concept of Protocol (According to Quality Research Results)”. Visnyk of V. N. Karazin Kharkiv National University. Series Sociological Studies of Contemporary Society: Methodology, Theory, Methods 38 (September), 13-19. https://periodicals.karazin.ua/ssms/article/view/8570.