Paper  bibtex   

@article{johnston_limits_nodate,
	title = {The {Limits} on {Privatizing} the {Commons}},
	url = {https://pol.illinoisstate.edu/downloads/conferences/2006/Johnston2006.pdf},
	journal = {pol.illinoisstate.edu},
	author = {Johnston, L.},
	keywords = {colcommon}
}