1390-0129 1390-0129 S1390-01292018000200039 Ecuador 00 04 2018 00 04 2018 41 1 39 44

2007 2010 BACHARACH 2014 2015 8 167-83 2012 40 1019-39 2006 2 2016 2012 2002 53 477-516 2012 2013 ISO 2006 2006 2014