@article{10_4064_am_15_4_511_515,
     author = {R. Smarzewski},
     title = {Characterization of optimal polynomial and rational starting approximations},
     journal = {Applicationes Mathematicae},
     pages = {511--515},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {1976},
     doi = {10.4064/am-15-4-511-515},
     zbl = {0374.41010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-15-4-511-515/}
}