TY  - RPRT
TI  - Digital cows grazing on digital grounds.
AU  - Thomas Pfeiffer
AU  - Martin A Nowak
PY  - 2006
DO  - 10.1016/j.cub.2006.10.011
UR  - https://pubmed.ncbi.nlm.nih.gov/17113371/
ID  - 17113371
ER  -