Eric G. Wagner. A Categorical Treatment of Pre- and Post-Conditions. Theoretical Computer Science, 53:3-24, 1987.
@article{Wagner87a, title = {A Categorical Treatment of Pre- and Post-Conditions}, author = {Eric G. Wagner}, year = {1987}, researchr = {https://researchr.org/publication/Wagner87a}, cites = {0}, citedby = {0}, journal = {Theoretical Computer Science}, volume = {53}, pages = {3-24}, }