Eduardo Figueiredo Nélio Cacho Cláudio Sant'Anna Mario Monteiro Uirá Kulesza Alessandro Garcia Sérgio Soares Fabiano Cutigi Ferrari Safoora Shakil Khan Fernando Castor Filho Francisco Dantas Evolving software product lines with aspects: an empirical study on design stability. 261-270 2008 ICSE http://doi.acm.org/10.1145/1368088.1368124 conf/icse/2008 db/conf/icse/icse2008.html#FigueiredoC08