@article {27541,
	title = {Classification and environmental significance of Cryptalgal limestones and dolomites, with illustrations from the Cambrian and Ordovician of southwestern Alberta},
	volume = {37},
	year = {1967},
	pages = {1163-1178},
	publisher = {Journal of Sedimentary Research},
	url = {http://www3.interscience.wiley.com/cgi-bin/fulltext/117923106/PDFSTART},
	author = {Aitken, J. D.}
}
