1. Anderson A. R., Belnap N. D.: Entailment – The logic of relevance and necessity. Princeton University Press, Princeton (1975)
2. Asenjo F. G.: A calculus of antinomies. Notre Dame Journal of Formal Logic 7, 103–107 (1966)
3. Beziau J.-Y.: Was Frege wrong when identifying reference with truth-value?. Sorites 11, 15–23 (1999)
4. Beziau J.-Y.: Sequents and Bivaluations. Logique et Analyse 44, 373–394 (2001)
5. Beziau, J.-Y., The philosophical import of Polish logic, in M. Talasiewicz (ed.), Methodology and philosophy of science at Warsaw University, Semper, Warsaw, 2002, pp. 109–124.