2218-3620 2218-3620 S2218-36202018000400040 República del Ecuador 00 09 2018 00 09 2018 10 4 40 45

2011 2 3 3 696-700 2005 15 27-43 2012 55 3 3 261-71 2010 2012 2015 24 1 1 15-21 2004 2001 3 1 1 2002 2009 2004 2 7 7 2010 31 2 2 179-88