Liang Sun Rinkal Patel Jun Liu Kewei Chen Teresa Wu Jing Li Eric Reiman Jieping Ye Mining brain region connectivity for alzheimer's disease study via sparse inverse covariance estimation. 1335-1344 2009 KDD http://doi.acm.org/10.1145/1557019.1557162 conf/kdd/2009 db/conf/kdd/kdd2009.html#SunPLCWLRY09