Brasó Rius, Jordi, and Xavier Torrebadella Flix. 2015. “‘Prisoner’s Bars’, a Traditional and Popular Game in the Spanish Physical Education (1807-1936)”. Revista Complutense de Educación 26 (3): 697-719. https://doi.org/10.5209/rev_RCED.2015.v26.n3.44680.