@TECHREPORT{Sán_Cla_2017,
author = "Sánchez Mayorga, Nelly - Quiñones Silva, David",
title = "Clavijas",
year = 2017,
institution = "Repositorio Corporación Unificada Nacional de Educación Superior",
url = "https://repositorio.cun.edu.co/handle/cun/8403",
}