@article{BSL_2015_44_3-4_a0,
     author = {Gao, Feng and Tourlakis, George},
     title = {A {Short} and {Readable} {Proof} of {Cut} {Elimination} for {Two} {First-Order} {Modal} {Logics}},
     journal = {Bulletin of the Section of Logic},
     publisher = {mathdoc},
     volume = {44},
     number = {3-4},
     year = {2015},
     url = {http://geodesic.mathdoc.fr/item/BSL_2015_44_3-4_a0/}
}