TY - JOUR T1 - The theory of classification part 12: Building the class hierarchy JO - Journal of Object Technology UR - https://eprints.whiterose.ac.uk/79266/ PY - 2004/01/01 AU - Simons AJH ED - DO - DOI: 10.5381/jot.2004.3.5.c2 VL - 3 IS - 5 SP - 13 EP - 24 Y2 - 2024/12/22 ER -