JournalsemVol. 56, No. 3Elemente der MathematikVolume 56, No. 3 (2001)DOI 10.4171/EMISSN 0013-6018eISSN 1420-8962pp. 89–94Another simple proof for the existence of the small Witt designHanfried LenzHans Havlicekpp. 95–101Triangle congruence and the Moulton planeRobert C. PowersPrasanna K. Sahoopp. 102–104A note on the St. Petersburg paradoxShrisha Raopp. 105–121Irrational rotations motivate measurable setsRodney Nillsenpp. 122–129On the principal centers of a triangleMichael S. Longuet-Higginspp. 130–134Aufgabenpp. 135–136Bücher und Computersoftware