TY  - RPRT
TI  - A note on difference-delay equations.
AU  - S A Levin
AU  - R M May
PY  - 1976
DO  - 10.1016/0040-5809(76)90043-5
UR  - https://pubmed.ncbi.nlm.nih.gov/1273798/
ID  - 1273798
ER  -