Abd Elmwogud Abd Elazem, K. Julkaisussa Assiut Journal of Sport Science and Arts (2014) “...combat sports...”
Akopyan, A. O., Kulagina, L. A. Julkaisussa Advances in Economics, Business and Management Research (2020) “...combat sports...”
Vasilev, G. F., Tiunova, O. V., Filchenkov, D. A. Julkaisussa Advances in Economics, Business and Management Research (2020) “...combat sports...”
Albuquerque, M. R., Menezes Lage, G., Teoldo da Costa, V., Melo Ferreira, R., Macedo Penna, E., Couto de Albuquerque Moraes, L. C., Malloy-Diniz, L. F. Julkaisussa Perceptual and Motor Skills (2012) “...combat sports...”