2448-5691 2448-5691 S2448-56912013000200040 10.22201/ceiich.24485691e.2013.11.50003 Costa Rica Spain Costa Rica 00 12 2013 00 12 2013 6 11 40 51

[1] 1992 38 31-53 [2] 1996 10 833 [3] 1985 [4] 1995 50 25-42 [5] 2000 19 93-103 [6] 2001 20 707-12