Richard Bornat, Bernard Sufrin. Animating Formal Proof at the Surface: The Jape Proof Calculator. Comput. J., 42(3):177-192, 1999.
@article{BornatS99:0, title = {Animating Formal Proof at the Surface: The Jape Proof Calculator}, author = {Richard Bornat and Bernard Sufrin}, year = {1999}, researchr = {https://researchr.org/publication/BornatS99%3A0}, cites = {0}, citedby = {0}, journal = {Comput. J.}, volume = {42}, number = {3}, pages = {177-192}, }