01161nam a2200289 i 450099100123123970753620020507185652.0950111s1955 us ||| | eng b10818947-39ule_instLE01309061ExLDip.to Matematicaeng515.353AMS 35-02AMS 35-XXJohn, Fritz331219Plane waves and spherical means applied to partial differential equations /Fritz JohnNew York :Interscience Publishers,1955viii, 170 p. ;23 cm.Interscience tracts in pure and applied mathematics ;2Partial differential equations.b1081894723-02-1728-06-02991001231239707536LE013 35-XX JOH11 C.1 (1955)12013000018980le013-E0.00-l- 02120.i1092571528-06-02LE013 35-XX JOH11 C.2 (1955)22013000018997le013-E0.00-l- 00000.i1092572728-06-02Plane waves and spherical means108203UNISALENTOle01301-01-95ma -engus 02