@article{10_4064_sm179_2_2,
     author = {Detlef M\"uller and Christoph Thiele},
     title = {Wave equation and multiplier estimates on $ax+b$ groups},
     journal = {Studia Mathematica},
     pages = {117--148},
     year = {2007},
     volume = {179},
     number = {2},
     doi = {10.4064/sm179-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm179-2-2/}
}