TY  - JOUR
AU  - Lo, Chi Yeung
TI  - Boundary value problems of generalized axially symmetric Helmholtz equations
JO  - Portugaliae mathematica
PY  - 1977
SP  - 279
EP  - 289
VL  - 36
IS  - 3-4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1977__36_3-4_115324/
LA  - en
ID  - PORMA_1977__36_3-4_115324
ER  -