TY  - RPRT
TI  - Can polymorphism be maintained by selection favouring an intermediate optimum phenotype?
AU  - R Semeonoff
PY  - 1977
DO  - 10.1038/hdy.1977.79
UR  - https://pubmed.ncbi.nlm.nih.gov/415022/
ID  - 415022
ER  -