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.