@article{JGG_2004_8_1_JGG_2004_8_1_a0,
     author = {H. E. Bez and T. J. Wetzel },
     title = {Optimal {Rational} {Circles} of {Degrees} {Five} and {Six}},
     journal = {Journal for geometry and graphics},
     pages = {1--16},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {2004},
     url = {http://geodesic.mathdoc.fr/item/JGG_2004_8_1_JGG_2004_8_1_a0/}
}