MALINOWSKI, Jacek, PIETROWICZ, Krzysztof and SZALACHA-JARMUŻEK, Joanna. Logic of Social Ontology and Łoś’s Operator. Logic and Logical Philosophy. Online. 25 February 2020. Vol. 29, no. 2, pp. 239-258. [Accessed 18 July 2024]. DOI 10.12775/LLP.2020.005.