1. Where the White Clouds Sail… (100 Years Since the Birth of Jaroslav Foglar);Alaniz J.;International Journal of Comic Art,2008
2. Metaphysics
3. Aristotle. 2018. Physics. Translated by C. D. C. Reeve. Indianapolis, IN: Hackett Pubslishing Company.
4. Baban, D., and R. Fischer. 2020. Rváčov 1. Praha, Czech Republic: Lipnik.
5. Bailey, E. 2001. The Secular Faith Controversy: Religion in Three Dimensions. London: Continuum.