Stephen G. Eick Todd L. Graves Alan F. Karr Audris Mockus Paul Schuster 396-412 2002 28 IEEE Trans. Software Eng. 4 https://doi.org/10.1109/TSE.2002.995435 http://doi.ieeecomputersociety.org/10.1109/TSE.2002.995435 db/journals/tse/tse28.html#EickGKMS02