@article{MZ_1995__218_4_174737,
     author = {Detlef M\"uller and Andreas Seeger},
     title = {Inequalities for spherically symmetric solutions of the wave equation.},
     journal = {Mathematische Zeitschrift},
     pages = {417--426},
     publisher = {mathdoc},
     volume = {218},
     number = {4},
     year = {1995},
     zbl = {0828.35072},
     url = {http://geodesic.mathdoc.fr/item/MZ_1995__218_4_174737/}
}