G. Librelotto, J. Ramalho, and P. Henriques.
" Metamorphosis – An Environment to Achieve Semantic Interoperability with Topic Maps", in Anais do III Simpósio Brasileiro de Sistemas de Informação, Curitiba, 2006, pp. 175-182, doi: https://doi.org/10.5753/sbsi.2006.14741.