Preface to the Best Papers from CLEI 2013 Special Issue

This special issue of the CLEI Electronic Journal consists of extended and revised versions of a selection of the best papers presented at the XXXIX Latin American Computing Conference (CLEI 2013), which took place in October 2013 in Naiguatá, Venezuela. The editors for this special issue were the chairs of the symposia from CLEI 2013 where these papers have been selected, plus the general chair of the program committee, which have participated in the selection and revision proces