Gaertner, H., B. Stelcer, and E. Wissel. “ALBERT SCHWEITZER’ ETHICS: APPLIED ASPECT”. Proceedings of the Kyiv Aviation Institute. Series: Philosophy. Cultural 21, no. 1 (May 5, 2016): 15–19. Accessed June 14, 2026. http://jrnl.kai.edu.ua/index.php/VisnikPK/article/view/10661.