@article{10_4064_cm_57_2_273_278,
     author = {Marek Kordos},
     title = {On the coexistence of various geometries},
     journal = {Colloquium Mathematicum},
     pages = {273--278},
     publisher = {mathdoc},
     volume = {57},
     number = {2},
     year = {1989},
     doi = {10.4064/cm-57-2-273-278},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-57-2-273-278/}
}