@article{AUCMP_2009__50_2_a0,
     author = {Balcar, Bohuslav and Spurn\'y, Ji\v{r}{\'\i} and Zelen\'y, Miroslav},
     title = {Foreword},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {2009},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/AUCMP_2009__50_2_a0/}
}