@article{BSL3_1_Wronski,
author = {Andrzej WRO{\'N}SKI},
title = {On Cardinality of Matrices Strongly Adequate for the Intuitionistic Propositional Logic},
journal = {Bulletin of the Section of Logic},
volume = {3},
number = {1},
year = {1974},
pages = {34--40}
}