@article{10_14708_cm_v13i1_5664,
     author = {W. Zelichowicz},
     title = {On the equation \((x^2 - 1)(z^2 - 1) = ({\cyru}^2 - 1)^2\)},
     journal = {Commentationes Mathematicae},
     pages = { 113--118},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1969},
     doi = {10.14708/cm.v13i1.5664},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v13i1.5664/}
}