: CTM allows modeling of hierarchical refinements in the classification tree, also called ''implicit dependencies''.
* '''Tool support''': The tool presented by Ostrand and Balcer only supported test case generation, but not the partitioning itself.
: WegenerGrochtmann and GrochtmannWegener presented their tool, the [[Classification Tree Editor]] (CTE) which supports both partitioning as well as test case generation.<ref>{{cite journal|last=Grochtmann|first=Matthias|coauthors=Wegener, Joachim|title=Test Case Design Using Classification Trees and the Classification-Tree Editor CTE|journal=Proceedings of the 8th International Software Quality Week(QW '95), San Francisco, USA|year=1995|month=5}}</ref>
