1
2
3
Published in 2010
Repository
4
5
Published in 2010
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6
Published in 1999
Repository
7
Published in 2010
Repository
8
9
Published in 2000
Repository
10
Published in 1998
Repository
11
12
by Mazón, Nelson; Peralta I., Eduardo; Murillo I., Angel; Falconí-Castillo, Esteban; Monar B., Carlos; Subía G., Cristian; Estrella Sandoval, Ana Paola; Pinzón Z., José
Published in 2007
Repository
13
14
15
16
Published in 2004
Repository