@book{286625,
	author = {Montoya Vallecilla, Jorge Olmedo,},
	title = {Elementos de concreto reforzado.},
	publisher = {Ediciones Unibagué,},
	year = {2017.},
	address = {Ibagué, Colombia :},
	url = {https://www.digitaliapublishing.com/a/156649/}
}