@article{10_14708_cm_v4i1_5446,
     author = {A. Schinzel},
     title = {O r\'ownaniu \(x^4 + ax^2 y^2 + by^4 = z^{2}\)},
     journal = {Commentationes Mathematicae},
     pages = { 53--57},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1960},
     doi = {10.14708/cm.v4i1.5446},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v4i1.5446/}
}