TY  - JOUR
AU  - Brown, Richard C.
AU  - Krall, Allan M.
TI  - On minimizing the sum of squares of $\Cal L^2$ norms of differential operators under constraints
JO  - Czechoslovak Mathematical Journal
PY  - 1977
SP  - 132
EP  - 143
VL  - 27
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1977.101451/
DO  - 10.21136/CMJ.1977.101451
LA  - en
ID  - 10_21136_CMJ_1977_101451
ER  -