TY - JOUR T1 - The theory of classification part 18: The theory of classification part 18: polymorphism through the looking glass JO - The Journal of Object Technology UR - https://eprints.whiterose.ac.uk/id/eprint/200741 PY - 2005/05/01 AU - Simons AJH ED - DO - DOI: 10.5381/jot.2005.4.4.c1 PB - AITO - Association Internationale pour les Technologies Objets VL - 4 IS - 4 SP - 7 EP - 18 Y2 - 2025/11/29 ER -