@article {41233,
	title = {The Upper Devonian Nisku pinnacle reefs of west-central Alberta (Canada) : subsurface and outcrop evidence for subtle structural control on reef inception},
	volume = {168},
	year = {1997},
	pages = {445-450},
	publisher = {Bulletin de la Societe Geologique de France},
	author = {Villeger, M.}
}
