@article{DAN_1982_262_3_a1,
     author = {Ya. M. Drugush},
     title = {Forest superintuitionistic logics},
     journal = {Doklady Akademii Nauk},
     pages = {523--526},
     publisher = {mathdoc},
     volume = {262},
     number = {3},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_262_3_a1/}
}