@article{cnc-bo-2016,
  title = {Towards efficient 5-axis flank {C}{N}{C} machining of free-form
           surfaces via fitting envelopes of surfaces of revolution},
  author = {Pengbo Bo and Michael Barto\v{n} and Denys Plakhotnik and
            Helmut Pottmann},
  journal = {Computer Aided Design},
  year = {2016},
  volume = {79},
  pages = {1-11},
}