@Article{lieber:superresolution-s,
  author = 	 "Karl Lieberherr",
  title = 	 "Complexity of superresolution",
  journal =  "Notices of the American Mathematical Society",
  year = 	 "1977",
  OPTvolume = 	 "24",
  OPTpages = 	 "A-433",
  OPTnote = 	 "abstract only, full version on web"
}