C. Ralha and A. Pak.
" Introduction to Business Process Modeling: Theory and Practice", in <em>Proceedings of the 5th Brazilian Symposium on Information Systems</em>, Brasília, 2009, pp. 331-336, doi: <a href="https://doi.org/10.5753/sbsi.2009.6192">https://doi.org/10.5753/sbsi.2009.6192</a>.