An Elementary Introduction to Lie Groups
 @TechReport{bettenTR0312,
   author = {D. Betten and E. Montanucci},
   title = {An Elementary Introduction to Lie Groups},
   institution = {Christian-Albrechts-Universit{\"a}t zu Kiel, 
       Institut f{\"u}r Informatik und Praktische Mathematik},
   type = {Technical Report},
   number = {Number 0312},
   month =      {December},
   year = 2003,
}