@article{10_14708_cm_v1i2_5383,
     author = {S. Szersze\'n},
     title = {Niekt\'ore w{\l}asno\'sci ognisk sto\.zkowych ujawnione za pomoc\k{a} perspektografu {De} {La} {Fresnaye{\textquoteright}a}},
     journal = {Commentationes Mathematicae},
     pages = { 292--322},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1955},
     doi = {10.14708/cm.v1i2.5383},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v1i2.5383/}
}