TY  - JOUR
AU  - Nakai, Mitsuru
AU  - Sario, Leo
TI  - Construction of Principal Functions by Orthogonal Projection
JO  - Canadian journal of mathematics
PY  - 1966
SP  - 887
EP  - 896
VL  - 18
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1966-089-4/
DO  - 10.4153/CJM-1966-089-4
ID  - 10_4153_CJM_1966_089_4
ER  -