@article{BSL3_1_Prucnal_Wronski,
author = {Tadeusz PRUCNAL and Andrzej WRO{\'N}SKI},
title = {An Algebraic Characterization of the Notion of Structural Completeness},
journal = {Bulletin of the Section of Logic},
volume = {3},
number = {1},
year = {1974},
pages = {30--33}
}