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, Basel, Birkhäuser, pp. 539-555.
(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, Dordrecht, Springer, pp. 169-180.