Downloaded from :
ftp://sidads.colorado.edu/pub/DATASETS/AGDC/blankenship_nsidc_0336/ (Subglacial lakes, Blankenship)
ftp://sidads.colorado.edu/pub/DATASETS/AGDC/nsidc0523_smith_V01/ (sbglacial lakes, Smith)

For information on user restrictions, please visit :
http://nsidc.org/data/docs/agdc/nsidc0336_blankenship/ (Subglacial lakes, Blankenship)
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8745187&fileId=S095410201200048X (sbglacial lakes, Wright and Siegert)
http://nsidc.org/data/docs/agdc/nsidc0523-smith/index.html (sbglacial lakes, Smith)
http://www.nature.com/nature/journal/v445/n7130/abs/nature05554.html (subglacial lakes, Recovery)
http://www.sciencedirect.com/science/article/pii/S0012821X02010415 (subglacial lakes, Vostok)