TY  - JOUR
AU  - Swanson, C.A.
TI  - Asymptotic Variational Formulae for Eigenvalues
JO  - Canadian mathematical bulletin
PY  - 1963
SP  - 15
EP  - 25
VL  - 6
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1963-004-9/
DO  - 10.4153/CMB-1963-004-9
ID  - 10_4153_CMB_1963_004_9
ER  -