Lutz Schröder, Dirk Pattinson. Rank-1 Modal Logics are Coalgebraic. Journal of Logic and Computation, 20(5):1113-1147, 2010. [doi]
@article{SchroderP10-1,
title = {Rank-1 Modal Logics are Coalgebraic},
author = {Lutz Schröder and Dirk Pattinson},
year = {2010},
doi = {10.1093/logcom/exn096},
url = {http://dx.doi.org/10.1093/logcom/exn096},
tags = {modal logic, logic},
researchr = {https://researchr.org/publication/SchroderP10-1},
cites = {0},
citedby = {0},
journal = {Journal of Logic and Computation},
volume = {20},
number = {5},
pages = {1113-1147},
}