@misc{indiciaedc16511e1e34, title = {A Darwinian evolutionary system. I. Definition and basic properties.}, author = {F Papentin}, year = {1973}, doi = {10.1016/0022-5193(73)90108-2}, url = {https://pubmed.ncbi.nlm.nih.gov/4728726/}, note = {Source identifier: 4728726} }