%0 Journal Article %A Detlef Müller %A Christoph Thiele %T Wave equation and multiplier estimates on $ax+b$ groups %J Studia Mathematica %D 2007 %P 117-148 %V 179 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4064/sm179-2-2/ %R 10.4064/sm179-2-2 %G en %F 10_4064_sm179_2_2