21
22
23
Published in 1994
Repository
24
Published in 2003
Repository
25
Published in 1996
Repository
26
27
Published in 2003
Repository
28
29
Published in 2003
Repository
30
Published in 1991
Repository
31
Published in 1994
Repository
32
33
34
35
36
37
by Falconí-Castillo, Esteban; Garófalo, Javier; Ponce, Luis; Coronel, Jorge; Abad G., Segundo; Rivadeneira, Miguel
Published in 2014
Repository
38
Published in 2003
Repository
39
Published in 1986
Repository
40