@article{DAN_1963_151_6_a15,
     author = {V. A. Yankov},
     title = {On the relation between deducibility in intuitionistic propositional calculus and finite implicative structures},
     journal = {Doklady Akademii Nauk},
     pages = {1293--1294},
     publisher = {mathdoc},
     volume = {151},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_151_6_a15/}
}