2588-0934 2588-0934 S2588-09342017000200013 10.37785/nw.v1n2.a1 Spain 00 12 2017 00 12 2017 1 2 13 32

2005 2007 2016 2015 1991 2005 2015 2016 2012 2015 1 14-24 2006 2016 2016 2009 2016 90-1 2013