@inproceedings{ICSM-1996-GefenS,
	author        = "David Gefen and Scott L. Schneberger",
	booktitle     = "{Proceedings of the 12th International Conference on Software Maintenance}",
	ee            = "http://computer.org/proceedings/icsm/7677/76770134abs.htm",
	isbn          = "0-8186-7677-9",
	pages         = "134--141",
	publisher     = "{IEEE Computer Society}",
	title         = "{The non-homogeneous maintenance periods: a case study of software modifications}",
	year          = 1996,
}