%0 Journal Article %A Kalas, Josef %T The use of Lyapunov functions in uniqueness and nonuniqueness theorems %J Archivum mathematicum %D 2000 %P 469-476 %V 36 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_2000__36_5_a13/ %G en %F ARM_2000__36_5_a13