Analytic evaluation of Feynman graph integrals
  We review the main steps of the differential equation approach to the analytic evaluation of Feynman graphs, showing at the same time its application to the 3-loop sunrise graph in a particular kinematical configuration. 
P. Mastrolia (1 and 2), E. Remiddi (1 and 3) ((1) University of   Bologna, (2) University of Karlsruhe, (3) INFN-Bologna)