TY  - JOUR
AU  - Jaake Peetre
TI  - Some Remarks on Continuous Orthogonal Expansions, and Eigenfunction Expansions for Positive Self-Adjoint Elliptic Operators with Variable Coefficients.
JO  - Mathematica Scandinavica
PY  - 1965
SP  - 56
EP  - 64
VL  - 17
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1965__17_165924/
ID  - MS2_1965__17_165924
ER  -