@article{10_4064_fm_85_1_49_55,
     author = {A. Berard and W. Nitka},
     title = {A new definition of the circle by the use of bisectors},
     journal = {Fundamenta Mathematicae},
     pages = {49--55},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {1974},
     doi = {10.4064/fm-85-1-49-55},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-85-1-49-55/}
}