@article {Wells1963,
	title = {Coral growth and geochronometry},
	journal = {Nature},
	volume = {197},
	year = {1963},
	pages = {948{\textendash}950},
	url = {http://www.nature.com/nature/journal/v197/n4871/abs/197948a0.html},
	author = {Wells, John W}
}
