@masterthesis{sivertsen12thesis,
  title		= "Ridge Extraction, and Illustrative Visualization of an FTLE Flow Field",
  author	= "Stian Sivertsen",
  year		= "2012",
  school	= "Visualization Group, Department of Informatics, University of Bergen",
  month		= "Oct",
  type		= "M.Sc. Thesis",
}