2
Published in 2014
Repository
3
Published in 1998
Repository
4
5
6
by Oyarzún, Pedro J.; Chamorro, Fernando; Córdova, Juan J.; Merino, Fausto; Valverde, Franklin; Velásquez, José
Published in 2002
Repository
7
Published in 2004
Repository
8
9
11
12
by Revelo, Jorge; Viteri D., Pablo; Vásquez C., Wilson; Valverde, Franklin; León F., Juan; Gallegos, Patricio
Published in 2010
Repository
13
by Vélez Navarrete, Arístides Rodrigo; Valverde, Franklin; Montesdeoca, Fabián; Alvarado Ochoa, Soraya Patricia; Kromann, Peter
Published in 2012
Repository
14
15
Published in 2016
Repository
16
17
Published in 2009
Repository
19
20
Published in 1979
Repository