@Article{jue:07e,    
  author = 	 {M.\ Barto\v{n} and B.\ J\"uttler},
  title = 	 {Computing roots of polynomials by quadratic clipping},
  journal = 	 {Comp.\ Aided Geom. Design},
  year = 	 {2007},
  volume =	{24},
  pages =	 {125--141},
}