@Article{ 
  ldeest00,
  author = { De Pascale, Luigi and Stepanov, Eugene },
  title = { Weak and strong density of compositions },
  journal = { Trans. Amer. Math. Soc. },
  year = { 2000 },
  volume = { 352 },
  number = { 8 },
  pages = { 3707-3721 },
  URL = { http://cvgmt.sns.it/paper/235/ },
  note = { cvgmt preprint}
}