Generalized derivatives of generalized distance functions and the existence of generalized nearest points. - Xian-Fa Luo; Jin-Su He (ICMLC, 2011)

Existence of best simultaneous approximations in Lp(S, Σ, X). - Xian-Fa Luo; Chong Li 002; Hong-Kun Xu; Jen-Chih Yao (J. Approx. Theory, 2011)