TY  - RPRT
TI  - ON SUBMANIFOLDS OF CERTAIN FUNCTION SPACES.
AU  - J Eells
PY  - 1959
DO  - 10.1073/pnas.45.10.1520
UR  - https://pubmed.ncbi.nlm.nih.gov/16590536/
ID  - 16590536
ER  -