@article{article, title = {{The Theory of Classification part 11: Adding class types to object implementations}}, url = {{https://eprints.whiterose.ac.uk/79265/ }}, year = {{2004}}, month = {{1}}, author = {{Simons AJH}}, doi = {{10.5381/jot.2004.3.3.c1}}, volume = {{3}}, journal = {{Journal of Object Technology}}, issue = {{3}}, pages = {{7-19}}, note = {{Accessed on 2024/12/22}}}