@Article{ 
  belwag,
  author = { Belloni, Marino and Wagner, Alfred },
  title = { Newton's Problem of Minimal Resistance in the Class of Bodies with Prescribed Volume },
  journal = { J. Convex Anal. },
  year = { 2003 },
  volume = { 2 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1227/ },
  note = { cvgmt preprint}
}