S. Sathiya Keerthi Shirish Krishnaj Shevade A Fast Tracking Algorithm for Generalized LARS/LASSO. 1826-1830 2007 18 IEEE Transactions on Neural Networks 6 http://doi.ieeecomputersociety.org/10.1109/TNN.2007.900229 db/journals/tnn/tnn18.html#KeerthiS07