@article {HeylenBurazerovicpscheund2011, title = {Fully constrained least-squares spectral unmixing by simplex projection}, journal = {IEEE Transactions on Geoscience and Remote Sensing}, volume = {49}, year = {2011}, pages = {4112-4122}, author = {Rob Heylen and Dzevdet Burazerovic and Paul Scheunders} }