@article{MS_1943__54_2_a4,
     author = {{\CYRP}.{\CYRS}. {\CYRN}{\cyro}{\cyrv}{\cyri}{\cyrk}{\cyro}{\cyrv}},
     title = {On the consistency of certain logical calculus},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {231--261},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {1943},
     zbl = {0060.02102},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MS_1943__54_2_a4/}
}