TY - JOUR AU - Kalas, Josef TI - The use of Lyapunov functions in uniqueness and nonuniqueness theorems JO - Archivum mathematicum PY - 2000 SP - 469 EP - 476 VL - 36 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_2000__36_5_a13/ LA - en ID - ARM_2000__36_5_a13 ER -