@article{DBLP:journals/cacm/LientzS81,
author = {Bennet P. Lientz and
E. Burton Swanson},
title = {Problems in Application Software Maintenance},
journal = {Commun. ACM},
volume = {24},
number = {11},
year = {1981},
pages = {763-769},
ee = {http://doi.acm.org/10.1145/358790.358796},
bibsource = {DBLP, http://dblp.uni-trier.de}
}