@misc{Akkaoui_Ahmed_A, author={Akkaoui, Ahmed and El Fatini, Mohamed and Fadli, Brahim}, howpublished={online}, publisher={Wydawnictwo Uniwersytetu Śląskiego}, language={eng}, type={artykuł}, title={A variant of d'Alembert's functional equation on semigroups with endomorphisms}, keywords={matematyka}, }