@InProceedings{tam2001a,
	author = {Roger Tam and Alain Fournier},
	title = {Shape Model and Threshold Extraction via Shape Gradients},
	booktitle = {Proceedings of Vision, Modeling and Visualization 2001},
	address = {Stuttgart, Germany},
	year = {2001},
	month = {21--23~} # nov, pages = {481--489} 
}