Empirical Software Engineering

The impact of test case summaries on bug fixing performance: An empirical investigation
Sebastiano Panichella, Annibale Panichella, Moritz Beller, Andy Zaidman, Harald C. Gall
Labeling Source Code with Information Retrieval Methods: An Empirical Study.
Andrea De Lucia, Massimiliano di Penta, Rocco Oliveto, Annibale Panichella, Sebastiano Panichella