@Article{SCI:Ros2011a,
  author =    "P. Rosen and V. Popescu and K. Hayward and C.
              Wyman",
  title =     "Non-Pinhole Approximations for Interactive
              Rendering",
  journal =   "IEEE Computer Graphics and Applications",
  volume =    "99",
  year =      "2011",
  url =       "http://www.sci.utah.edu/publications/rosen11/CG_CGA-2010-01-0001.R1_Rosen.pdf",
}