TY  - RPRT
TI  - The eigenfunction problem in higher dimensions: Exact results.
AU  - B W Knight
AU  - L Sirovich
PY  - 1986
DO  - 10.1073/pnas.83.3.527
UR  - https://pubmed.ncbi.nlm.nih.gov/16593649/
ID  - 16593649
ER  -