@article{DBLP:journals/ibmrd/DukeSW71,
author = {Keith A. Duke and
H. Daniel Schnurmann and
Terry Ira Wilson},
title = {System Validation by Three-Level Modeling Synthesis},
journal = {IBM Journal of Research and Development},
volume = {15},
number = {2},
year = {1971},
pages = {166-174},
ee = {http://dx.doi.org/10.1147/rd.152.0166},
bibsource = {DBLP, http://dblp.uni-trier.de}
}