The Approach to Pride, Envy and Anger in the Treatise by Petr Chelčický called "O sedmi smrtelných hřieších" in Comparison with Literary Works by Tomáš of Štítné.
The Seven Deadly Sins in the Works of Tomáš of Štítný and Petr Chelčický in the Context of the Development and Shaping of Christian Morality in the Middle Ages.