@article{BSL5_4_Wojtylak1,
author = {Piotr WOJTYLAK},
title = {A New Proof of Structural Completeness of {\L}ukasiewicz's Logics},
journal = {Bulletin of the Section of Logic},
volume = {5},
number = {4},
year = {1976},
pages = {145--152}
}