@Misc{BVMC:234097,
author = {Creo Rodríguez, Martín},
title = {El sistema de coordenadas en LSE},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2006},
year = {2006},
url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcjq0w8}
}