@inproceedings{AguiardeOliveiraAlencarFerreiraLessa2012,
  author    = {J{\´u}lio Aguiar de Oliveira and B{\´a}rbara Alencar Ferreira Lessa},
  title     = {Hans Kelsen and the tradition of natural law: why Kelsen's objections to the natural-law doctrine does not apply against Aquinas's theory of natural law},
  booktitle = {25th IVR World Congress: Law, Science and Technology Frankfurt am Main 15-20 August 2011 ; Paper Series ; 043},
  year      = {2012},
}