@INPROCEEDINGS { AUTHOR = "H{\'e}ctor Ferrada and Gonzalo Navarro", TITLE = "Efficient Compressed Indexing for Approximate Top-k String Retrieval", EDITOR = "E. Moura and M. Crochemore", BOOKTITLE = "21st International Symposium on String Processing and Information Retrieval (SPIRE)", PAGES = "18-30", MONTH = "Oct", YEAR = "2014", ADDRESS = "Ouro Preto, Brazil", PUBLISHER = "Springer-Verlag", SERIES ="Lecture Notes in Computer Science", NUMBER = "8977", }