1
2
by Valverde, Franklin; Torres, Cristhian; Rivadeneira Ruales, Jorge Esteban; Parra, Rafael; Cartagena Ayala, Yamil Everaldo; Alvarado Ochoa, Soraya Patricia
Published in 2010
Repository
3
4
5
by Aguinaga Bósquez, Juan Pablo; Yánez G., Carlos; Valverde, Franklin; Alvarado Ochoa, Soraya Patricia
Published in 2012
Repository
6
7
8
9
10
by Vélez Navarrete, Arístides Rodrigo; Valverde, Franklin; Montesdeoca, Fabián; Alvarado Ochoa, Soraya Patricia; Kromann, Peter
Published in 2012
Repository
11
12
Published in 2009
Repository
13