@article{etna_vol36_pp54-82, author = {Lixing Han and Michael Neumann and Upendra Prasad}, title = {Alternating projected Barzilai-Borwein methods for nonnegative matrix factorization}, journal = {Electron. Trans. Numer. Anal.}, volume = {36}, year = {2009-2010}, pages = {54--82}, }