TY  - RPRT
TI  - Puzzles in longevity.
AU  - C A Clarke
AU  - U Mittwoch
PY  - 1994
DO  - 10.1353/pbm.1994.0060
UR  - https://pubmed.ncbi.nlm.nih.gov/8202341/
ID  - 8202341
ER  -