DAVEY, Brian A. - HAVIAR, Miroslav - PRIESTLEY, Hilary A. Kleene algebras: a case-study of clones and dualities from endomorphisms. In Acta Scientiarum Mathematicum. - Szeged : Bolyai Institute, University of Szeged, 2001. ISSN 0001-6969, 2001, vol. 67, no. 1-2, pp. 77-103. Dostupné na internete: <http://acta.fyx.hu/acta/showCustomerVolume.action?id=1971&dataObjectType=volume&noDataSet=true&style=>