October 2010 pdf-file, ps-file.
January 2011 pdf-file, ps-file.
April 2011 pdf-file, ps-file.
Note that written exams up to and including that in April 2011 were 5 hours long while future exams (beginning with that in October 2011) will be 4 hours long. In addition, written exams up to and including that in April 2011 only had grades U (failure) and G (success), while future exams (beginning with that in October 2011) will have grades U, 3, 4 and 5 for CTH and U, G and VG for GU. Otherwise the historic exams are representative also for the future exams in terms of their subject matter.
October 2011 pdf-file, ps-file.