TY  - GEN
AU  - Grubb, Gerd
TI  - Spectral asymptotics for the " Soft " selfadjoint extension of a symmetric elliptic differntial operator
PY  - 1981///
CY  - Kobenhavns
PB  - Universitet Kobenhavns
N1  - Contine bibliografie; Lucrarea este multigrafiata
ER  -