TY  - JOUR
AU  - Grammatikopoulos, Myron.K.
AU  - Hristov, Tzvetan D.
AU  - Popivanov, Nedyu I.
TI  - Singular solutions to Protter's problem for the 3-D wave equation involving lower order terms
JO  - Electronic Journal of Differential Equations
PY  - 2003
VL  - 2003
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2003__2003__a146/
LA  - en
ID  - EJDE_2003__2003__a146
ER  -