TY  - RPRT
TI  - Periodic solutions for a population dynamics problem with age-dependence and spatial structure.
AU  - M Kubo
AU  - M Langlais
PY  - 1991
DO  - 10.1007/bf00167157
UR  - https://pubmed.ncbi.nlm.nih.gov/2061697/
ID  - 2061697
ER  -