[1. Bobzien, S. Determinism and Freedom in Stoic Philosophy, Oxford: Clarendon Press, 1998.]Search in Google Scholar
[2. Garson, J. W. Modal Logic for Philosophers, Cambridge: Cambridge University Press, 2006.10.1017/CBO9780511617737]Search in Google Scholar
[3. Łukasiewicz, J. O logice trójwartościowej, Ruch filozoficzny 5, 1920, pp. 170–171б; English translation: On three-valued logic, In L. Borkowski (ed.), Selected works by Jan Łukasiewicz, Amsterdam: North–Holland, 1970, pp. 87-88.]Search in Google Scholar