0379-3982 0379-3982 S0379-39822016000800047 10.18845/tm.v29i6.2901 Costa Rica Costa Rica 00 09 2016 00 09 2016 29 47 58

[1] 2012 21 034005 [2] 2005 2 391 [3] 2006 34 1310 [4] 2008 5 503 [5] 2009 35 587 [6] 2009 [7] [8] [9] Electromagnetic spectrum 2014 [10] [11] [12] 2 1 1 [13] 2013 [14] 2007 62 169