@misc{Lewandowski_Zdzisław_(1929-2011)_On, author={Lewandowski, Zdzisław (1929-2011)}, howpublished={online}, publisher={nakł. UMCS}, language={eng}, type={artykuł}, title={On some Problems of M. Biernacki Concerning Subordinate Functions and on some Related Topics}, keywords={matematyka}, }