We reinvestigate the automaton version of an Edwards-Wilkinson-type mo
del with quenched disorder introduced recently by Leschhorn [Leschhorn
, Physica A 195 (1993) 324] in interface dimensions D = 1,2,3 at the d
epinning transition. Our numerical results suggest that the dynamic ex
ponent z has a D-independent value z = 3/2 while the roughness exponen
t alpha has the value alpha = (4 - D)/3. (C) 1998 Elsevier Science B.V
. All rights reserved.