HAUG, J. T.; HAUG, C. Are there martial art styles that represent natural systems?. Revista de Artes Marciales Asiáticas, [S. l.], v. 10, n. 2, p. 88–104, 2015. DOI: 10.18002/rama.v10i2.3296. Disponível em: https://revpubli.unileon.es/index.php/artesmarciales/article/view/3296. Acesso em: 18 aug. 2022.