A. Rabsahl, “How Human Space Travel Influences Space Tourism: A Critical Review about Astronautical Space Travel - Beginning of a new era by Prof. Dr. Rupert Gerzer”, JRSE, vol. 13, no. 1, Jul. 2025, Accessed: Jul. 29, 2025. [Online]. Available: https://tge.sze.hu/tge/article/view/437