@booklet {RicKor-KJ2-2002, title = {Kalenderblatt {Juni} 2002}, year = {2002}, note = {MathInsight 2000, Springer-Verlag, Heidelberg.}, publisher = {Springer-Verlag}, keywords = {sonstige}, author = {Richter-Gebert, J{\"u}rgen and Kortenkamp, Ulrich} }