Boleslaw Sobocinski. On the propositional system A of Vučković and its extension. II. Notre Dame Journal of Formal Logic, 5(3):223-237, 1964. [doi]
@article{Sobocinski64d,
title = {On the propositional system A of Vučković and its extension. II},
author = {Boleslaw Sobocinski},
year = {1964},
doi = {10.1305/ndjfl/1093957884},
url = {http://dx.doi.org/10.1305/ndjfl/1093957884},
researchr = {https://researchr.org/publication/Sobocinski64d},
cites = {0},
citedby = {0},
journal = {Notre Dame Journal of Formal Logic},
volume = {5},
number = {3},
pages = {223-237},
}