References
Toshiharu Waragai
with Omori, H. (2015). Negative modalities in the light of paraconsistency. In A. Koslow, & A. Buchsbaum (Eds.). The road to universal logic II (pp. 539-555). Basel: Birkhäuser.
(1998). On some essential subsystems of Leśniewski's ontology and the equivalence between the singular barbara and the law of Leibniz in ontology. In K. Kijania-Placek, & J. Woleński (Eds.). The Lvov-Warsaw school and contemporary philosophy (pp. 169-180). Dordrecht: Springer.