1 http://hdl.handle.net/10338.dmlcz/142692 1 Franz Ignaz Cassian Hallaschka and his book "Elementa Eclipsium" http://hdl.handle.net/10338.dmlcz/142697 Franz Ignaz Cassian Hallaschka and his book "Elementa Eclipsium" Service stations location problem http://hdl.handle.net/10338.dmlcz/142696 Service stations location problem The variety generated by tournaments http://hdl.handle.net/10338.dmlcz/142695 The variety generated by tournaments Extreme norms on $\mathbb{R}^2$ http://hdl.handle.net/10338.dmlcz/142694 Extreme norms on $\mathbb{R}^2$