A. Simão and J. Maldonado.
" MuDeL: A Language and a System for Describing and Generating Mutants", in <em>Proceedings of the 15th Brazilian Symposium on Software Engineering</em>, Rio de Janeiro/RJ, 2001, pp. 240-255, doi: <a href="https://doi.org/10.5753/sbes.2001.23992">https://doi.org/10.5753/sbes.2001.23992</a>.