@ARTICLE{BI92,
  author = {Bridges, Douglas and Ishihara, Hajime},
  title = {Locating the range of an operator on a {H}ilbert space},
  journal = {The Bulletin of the London Mathematical Society},
  year = {1992},
  volume = {24},
  pages = {599--605},
  number = {6},
  keywords = {bib,con}
}