TY  - RPRT
TI  - Backwrd population projection by a generalized inverse.
AU  - T N Greville
AU  - N Keyfitz
PY  - 1974
DO  - 10.1016/0040-5809(74)90019-7
UR  - https://pubmed.ncbi.nlm.nih.gov/4445970/
ID  - 4445970
ER  -