Properties of Independently Axiomatizable Bimodal Logics
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\begin{bibtex} @article{DBLP:journals/jsyml/KrachtW91,
author = {Marcus Kracht and
Frank Wolter},
title = {Properties of Independently Axiomatizable Bimodal Logics},
journal = {J. Symb. Log.},
volume = {56},
number = {4},
year = {1991},
pages = {1469-1485},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
\end{bibtex}
