TY  - RPRT
TI  - Reduction of structured population models to threshold-type delay equations and functional differential equations: a case study.
AU  - H L Smith
PY  - 1993
DO  - 10.1016/0025-5564(93)90006-v
UR  - https://pubmed.ncbi.nlm.nih.gov/8431644/
ID  - 8431644
ER  -