@article{DBLP:journals/ibmrd/GuenthnerLS86,
author = {Franz Guenthner and
Hubert Lehmann and
Wolfgang Sch{\"o}nfeld},
title = {A Theory for the Representation of Knowledge},
journal = {IBM Journal of Research and Development},
volume = {30},
number = {1},
year = {1986},
pages = {39-56},
ee = {http://dx.doi.org/10.1147/rd.301.0039},
bibsource = {DBLP, http://dblp.uni-trier.de}
}