- Alexandre Rademaker
- João Bregunci
- http://leanprover.github.io
- http://dl.kr.org
- http://arademaker.github.io/bibliography/phdthesis-4.html
- http://arademaker.github.io/files/thesis.pdf
- https://arxiv.org/pdf/1910.01697.pdf
- https://github.com/maxd13/logic-soundness
- http://www.cs.us.es/~mjoseh/alc/ , https://link.springer.com/article/10.1007/s10817-013-9291-8 and https://core.ac.uk/download/pdf/158965276.pdf
- https://github.com/leanprover/lean/blob/72a965986fa5aeae54062e98efb3140b2c4e79fd/tests/lean/run/soundness.lean and https://arxiv.org/abs/1503.08744 (soundness.lean)
- constructive DL: http://arademaker.github.io/files/hylo-2010.pdf
- https://leanprover.github.io/theorem_proving_in_lean/