TY  - RPRT
TI  - On evolutionary systems.
AU  - J M Alvarez de Lorenzana
AU  - L M Ward
PY  - 1987
DO  - 10.1002/bs.3830320104
UR  - https://pubmed.ncbi.nlm.nih.gov/3689299/
ID  - 3689299
ER  -