Joel E. Henry, James P. Cain. A quantitative comparison of perfective and corrective software maintenance. Journal of Software Maintenance, 9(5):281-297, 1997. [doi]
@article{HenryC97,
title = {A quantitative comparison of perfective and corrective software maintenance},
author = {Joel E. Henry and James P. Cain},
year = {1997},
url = {http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1096-908X(199709/10)9:5<281::AID-SMR154>3.0.CO;2-P/abstract},
researchr = {https://researchr.org/publication/HenryC97},
cites = {0},
citedby = {0},
journal = {Journal of Software Maintenance},
volume = {9},
number = {5},
pages = {281-297},
}