@article{NUMA_1975__25_132380,
     author = {V. Pt\^ak},
     title = {The {Rate} of {Convergence} of {Newtons'}  {Process.}},
     journal = {Numerische Mathematik},
     pages = {279--286},
     publisher = {mathdoc},
     volume = {25},
     year = {1975},
     zbl = {0378.65031},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1975__25_132380/}
}