@INPROCEEDINGS { AUTHOR = "Tom{\'a}s Vera and Sergio Ochoa and Daniel Perovich", TITLE = "Requirements engineering in the pre-contract stage: exploring the processes and practices used in small and medium-sized software enterprises", BOOKTITLE = "36th ACM Symposium on Applied Computing (SAC)", PAGES = "1346-1353", MONTH = "Mar", YEAR = "2021", ADDRESS = "Gwangju, Korea", PUBLISHER = "ACM Press", }