Anthony J. H. Simons. The Theory of Classification, Part 5: Axioms, Assertions and Subtyping. Journal of Object Technology, 2(1):13-22, 2003. [doi]
@article{Simons03:0,
title = {The Theory of Classification, Part 5: Axioms, Assertions and Subtyping},
author = {Anthony J. H. Simons},
year = {2003},
url = {http://www.jot.fm/issues/issue_2003_01/column2.pdf},
tags = {classification, subtyping},
researchr = {https://researchr.org/publication/Simons03%3A0},
cites = {0},
citedby = {0},
journal = {Journal of Object Technology},
volume = {2},
number = {1},
pages = {13-22},
}