@article{BSL_2019_48_3_a2,
     author = {Witczak, Tomasz},
     title = {Topological and {Multi-Topological} {Frames} in the {Context} of {Intuitionistic} {Modal} {Logic}},
     journal = {Bulletin of the Section of Logic},
     pages = {187--205},
     year = {2019},
     volume = {48},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BSL_2019_48_3_a2/}
}