@phdthesis{PhD-Thesis_2006_Xu,
  address = {Raleigh, NC, USA},
  author = {Xu, Libai},
  school = {North Carolina State University},
  title = {{Prompt Gamma-ray Imaging for Small Animals}},
  url = {http://www.lib.ncsu.edu/resolver/1840.16/5636},
  year = {2006}
}