“The Environmental Costs and Benefits of Fracking”
http://www.annualreviews.org/doi/pdf/10.1146/annurev-environ-031113-144051
Assessment and risk analysis of casing and cement impairment in oil and gas wells in Pennsylvania, 2000–2012 – 75,505 wells
http://psehealthyenergy.org/data/Ingraffea_et_al._2014_WellIntegrityfull_.pdf
“A new look at methane and non-methane hydrocarbon emissions from oil and natural gas operations in the Colorado Denver-Julesburg Basin”
http://onlinelibrary.wiley.com/doi/10.1002/2013JD021272/pdf
“Toward a better understanding and quantification of methane emissions from shale gas development”
http://www.pnas.org/content/111/17/6237.full.pdf+html
“Oil and gas wells and their integrity: Implications for shale and unconventional resource exploitation”
“The Health Implications of Fracking”
http://psehealthyenergy.org/data/Lancet_Commentary.pdf
“Estrogen and Androgen Receptor Activities of Hydraulic Fracturing Chemicals and Surface and Ground Water in a Drilling-Dense Region”
http://press.endocrine.org/doi/full/10.1210/en.2013-1697
“Anthropogenic emissions of methane in the United States”
http://www.pnas.org/content/110/50/20018.full
“The implications of unconventional drilling for natural gas: a global public health concern”
http://www.publichealthjrnl.com/article/S0033-3506(13)00241-2/fulltext