John, Fritz, Plane Waves And Spherical Means Textual Documents John, Fritz - New York: Interscience Publishers,Inc, 1955. - VIII,172p.: 01792. Subjects--Uniform Titles: Mathematics. Subjects--Index Terms: Identities for Spherical Mean,Fundamental Solution,Wave Equation,Howard`s Identy Dewey Class. No.: 517.38 JOH