@article{BSL42_1_2_Lazarz,
author = {Marcin {\L}AZARZ},
title = {Characterization of Medvedev’s Logic by Means of Kubi{\'n}ski's Frames},
journal = {Bulletin of the Section of Logic},
volume = {42},
number = {1--2},
year = {2013},
pages = {83--90}
}