Oliva, G. A., J. T. da Silva, M. A. Gerosa, F. W. S. Santana, C. M. L. Werner, C. R. B. de Souza, and K. C. M. de Oliveira. “Evolving the System’s Core: A Case Study on the Identification and Characterization of Key Developers in Apache Ant”. COMPUTING AND INFORMATICS, vol. 34, no. 3, Oct. 2015, pp. 678-24, https://www.cai.sk/ojs/index.php/cai/article/view/3225.