TY  - RPRT
TI  - Letter: Isotopic stedy-state requirements.
AU  - E N Siguel
PY  - 1975
DO  - 10.1016/0014-4800(75)90086-6
UR  - https://pubmed.ncbi.nlm.nih.gov/1126430/
ID  - 1126430
ER  -