Cezary Kaliszyk; Freek Wiedijk; Maxim Hendriks; Femke van Raamsdonk (2007). "Teaching logic using a state-of-the-art proof assistant"(PDF). H. Geuvers and P. Courtieu (Eds.), PATE'07, International Workshop on Proof Assistants and Types in Education: 37–50. Archived from the original(PDF) on January 17, 2023.
Cezary Kaliszyk; Freek Wiedijk; Maxim Hendriks; Femke van Raamsdonk (2007). "Teaching logic using a state-of-the-art proof assistant"(PDF). H. Geuvers and P. Courtieu (Eds.), PATE'07, International Workshop on Proof Assistants and Types in Education: 37–50. Archived from the original(PDF) on January 17, 2023.