@article{Sánchez_2019, title={Presentación}, url={https://revistas.uexternado.edu.co/index.php/fiscal/article/view/5936}, DOI={10.18601/16926722.n14.01}, number={14}, journal={Revista de Derecho Fiscal}, author={Sánchez, César J.}, year={2019}, month={may}, pages={5–6} }