@TechReport{SCI:Li2007a,
  author =    "G.-S. Li and X. Tricoche and C.D. Hansen",
  title =     "Visualizing Unsteady Flows on Surfaces Using
              Spherical Parameterization",
  number =    "UUSCI-2007-013",
  year =      "2007",
  institution = "University of Utah",
  type =      "{SCI} Institute Technical Report",
  keywords =  "vector field methods, cardiac heart, bioelectric
              fields",
  url =       "http://www.sci.utah.edu/publications/SCITechReports/UUSCI-2007-013.pdf",
}