A constrained optimization reformulation and a feasible descent direction method for L1/2 regularization. - Dong-Hui Li; Lei Wu; Zhe Sun; Xiongji Zhang (Comput. Optim. Appl., 2014)

An Interior Point Method for L1/2-SVM and Application to Feature Selection in Classification. - Lan Yao; Xiongji Zhang; Dong-Hui Li; Feng Zeng; Haowen Chen (J. Appl. Math., 2014)