@misc{Kukla_Stanisław_Free, author={Kukla Stanisław and Szewczyk Mariusz}, howpublished={online}, publisher={Wydaw. Politechniki Częstochowskiej}, language={eng}, type={artykuł}, title={Free vibration of annular and circular plates of stepped thickness. Application of Green’s function method}, keywords={Funkcje Greena, Green's functions}, }