@misc{Ma_William_Two-point, author={Ma, William and Maitani, Fumio and Minda, David}, howpublished={online}, publisher={Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej}, language={eng}, type={artykuł}, title={Two-point Comparisons Between Hyperbolic and Euclidean Geometry on Plane Regions}, keywords={matematyka}, }