@misc{Marinescu_Dan_Ştefan_An, author={Marinescu, Dan Ştefan and Monea, Mihai}, howpublished={online}, publisher={Wydawnictwo Uniwersytetu Śląskiego}, publisher={De Gruyter Open}, language={eng}, type={czasopismo}, title={An Extension of a Ger’s Result}, keywords={convex functions, continuous functions, differentiable functions}, }