William Colgan
- Open-Pit Glacier Ice Excavation: Brief Review. Dans: Journal of Cold Regions Engineering, v. 27, n. 4 (décembre 2013). (2013):
- Considering the Ice Excavation Required to Establish and Maintain an Open Ice Pit. Dans: Journal of Cold Regions Engineering, v. 28, n. 3 (septembre 2014). (2014):