Corporate Location 

 - [S.l.]   : Corporate Location 
 - Bimestral 
 - 1994 (mar-abr, sep-oct, nov-dic); 1995 (ene-feb, may-jun, jul-ago, sep-oct, nov-dic); 1996 (ene-feb, mar-abr, may-jun, jul-ago, sep-oct, nov-dic); 1997 (ene-feb, mar-ab, may-jun, jul-ago, sep-oct, nov-dic); 1998 (ene-feb, mar-abr, may-jun, jul-ago)