@article {pettit2003effects,
	title = {Effects of basal sliding on isochrones and flow near an ice divide},
	journal = {Annals of Glaciology},
	volume = {37},
	number = {1},
	year = {2003},
	pages = {370{\textendash}376},
	publisher = {International Glaciological Society},
	author = {Erin C Pettit and Jacobson, H Paul and Waddington, Edwin D}
}
