@Book{halmos1982,
  author =	 {P. R. Halmos},
  title = 	 {A Hilbert space problem book},
  publisher = 	 {Springer},
  year = 	 {1982}
  }

@Article{vitale1975,
  author = 	 {R. A. Vitale},
  title = 	 {Representation of a crinkled arc},
  journal = 	 {Proceedings of the American Mathematical Society},
  year = 	 {1975},
  volume =	 {52},
  pages =	 {303--304},
  month =	 {October}
  }