@article{BSL_2020_49_4_a4,
     author = {Pynko, Alexej P.},
     title = {Four-valued expansions of {Dunn-Belnap's} logic {(I):} {Basic} characterizations},
     journal = {Bulletin of the Section of Logic},
     pages = {401--437},
     publisher = {mathdoc},
     volume = {49},
     number = {4},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BSL_2020_49_4_a4/}
}