0012-7353 0012-7353 S0012-73532018000300121 10.15446/dyna.v85n206.66804 Ecuador 00 09 2018 00 09 2018 85 206 121 127

[1] 2014 510 510 164-81 [2] 2010 2nd [3] 2003 51 12 12 12-4 [4] 1879 18 18 141-95 [5] 1942 107 107 561-73 [6] 1948 39-64 [7] 1936 [8] 2008 113 F2 F2 [9] 1982 7 4 4 349-65 [10] 2004 42 4 4 357-75 [11] 2007 133 11 11 1192-205 [12] 1989 25 6 6 1161-86 [13] 2002 128 5 5 484-99 [14] 2003 53 1-2 1-2 75-95 [15] 2006 3rd [16] 1990 313-43 [17] 2010 2nd [18] 2005 [19] 1994 32 8 8 1598-605 [20] Open∇FOAM 2014