Dr. Penglase publishes two articles on Brazilian Jiu-Jitsu
Renzo Gracie vs Eugenio Tadeu 1997
Article 1: https://mas.cardiffuniversitypress.org/articles/10.18573/mas.281
Article 2: https://mas.cardiffuniversitypress.org/articles/10.18573/mas.300
Renzo Gracie vs Eugenio Tadeu 1997
Article 1: https://mas.cardiffuniversitypress.org/articles/10.18573/mas.281
Article 2: https://mas.cardiffuniversitypress.org/articles/10.18573/mas.300