Jackson, R.E. and Gorody, A.W. and Mayer, B. and Roy, J.W. and Ryan, M.C. and Van Stempvoort, D.R.  (2013) Groundwater Protection and Unconventional Gas Extraction: The Critical Need for Field-Based Hydrogeological Research.  Groundwater, 51 (4).  pp. 488-510. DOI: https://doi.org/10.1111/gwat.12074 <https://doi.org/10.1111/gwat.12074>