Ariel Kellison. A machine-checked direct proof of the Steiner-lehmus theorem. In Andrei Popescu 0001, Steve Zdancewic, editors, CPP '22: 11th ACM SIGPLAN International Conference on Certified Programs and Proofs, Philadelphia, PA, USA, January 17 - 18, 2022. pages 265-273, ACM, 2022. [doi]
Abstract is missing.