Author details

Héctor Javier Hortúa\* and Leonardo Castañeda Universidad Nacional de Colombia, Bogotá, Colombia

\*Address all correspondence to: hjhortuao@unal.edu.co

© 2018 The Author(s). Licensee IntechOpen. This chapteris distributed underthe terms oftheCreative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
