@book{ Solr-RepoTEC11247, title = {Relaciones binarias: propiedad simétrica}, author = {Chavarría-Molina, Jeffry}, year = {2020}, url = {https://www.youtube.com/watch?v=c4HRgB5H_e4&feature=youtu.be} url = {https://hdl.handle.net/2238/11247} }