1. Daikon invariant detector. https://plse.cs.washington.edu/daikon. Daikon invariant detector. https://plse.cs.washington.edu/daikon.
2. Java-callgraph. https://github.com/gousiosg/java-callgraph. Java-callgraph. https://github.com/gousiosg/java-callgraph.
3. The objectaid uml explorer. http://objectaid.com/. The objectaid uml explorer. http://objectaid.com/.
4. The Usefulness of Optimum Experimental Designs
5. A learning-to-rank based fault localization approach using likely invariants