@article{TRSPY_1958_52_a6,
     author = {N. N. Vorob'ev},
     title = {A new algorithm of derivability in a constructive calculus of statements},
     journal = {Informatics and Automation},
     pages = {193--225},
     publisher = {mathdoc},
     volume = {52},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1958_52_a6/}
}