@article{greene08ensemble,
 author = {Derek Greene and Gerard Cagney and Nevan Krogan and P\'{a}draig Cunningham},
 journal = {Bioinformatics},
 number = {15},
 pages = {1722--1728},
 pdf = {http://www.derekgreene.com/papers/greene08ensemble.pdf},
 title = {{Ensemble Non-negative Matrix Factorization Methods for Clustering Protein-Protein Interactions}},
 volume = {24},
 year = {2008}
}