Sommaire

Contents
Professor Emanuel Klier 1918 - 1998
p. 3-4
Extreme norms on $\mathbb{R}^2$
p. 5-20
The variety generated by tournaments
p. 21-41
Service stations location problem
p. 43-50
Franz Ignaz Cassian Hallaschka and his book "Elementa Eclipsium"
p. 51-78