@article{BSL8_4_Kabzinski,
author = {Jacek K. KABZI{\N}SKI},
title = {On Equivalential Fragment of the Three-Valued Logic of {\L}ukasiewicz},
journal = {Bulletin of the Section of Logic},
volume = {8},
number = {4},
year = {1979},
pages = {182--187}
}