@article{10_4064_am_11_3_337_352,
     author = {Krystyna Zi\k{e}tak},
     title = {On the optimum rational function connected with the {ADI-method}},
     journal = {Applicationes Mathematicae},
     pages = {337--352},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1969},
     doi = {10.4064/am-11-3-337-352},
     zbl = {0231.65060},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-11-3-337-352/}
}