Pose Estimation Revisited
 @TechReport{rosenhahnTR0308,
   author = {B. Rosenhahn},
   title = {Pose Estimation Revisited},
   institution = {Christian-Albrechts-Universit{\"a}t zu Kiel, 
       Institut f{\"u}r Informatik und Praktische Mathematik},
   type = {Technical Report},
   number = {Number 0308},
   month =      {September},
   year = 2003,
}