@Article{SCI:Xiu2008a,
  author =    "D. Xiu",
  title =     "Numerical Integration Formulas of Degree Two",
  journal =   "Applied Numerical Mathematics",
  volume =    "58",
  number =    "10",
  pages =     "1515--1520",
  year =      "2008",
  doi =       "10.1016/j.apnum.2007.09.004",
  keywords =  "Numerical integration, Cubature formulas",
  url =       "http://www.sci.utah.edu/publications/xiu08/Xiu_ANM2008.pdf",
}