@article{ barr2006,
  author = {Jeremiah Barr and Shrisha Rao},
  title = {The n-Queens Problem in Higher Dimensions}, 
  journal = {Elemente der Mathematik},
  publisher = {European Mathematical Society}, 
  volume = {61},
  number = {4}, 
  year = {2006}, 
  pages = {133--137},
  note = {arXiv:0712.2309v1 [math.CO], review at io-port 05215066,
                  Zentralblatt MATH}
        }