On Müntz Rational Approximation Rate in Lp Spaces. - Wei Xiao; Songping Zhou (J. Approx. Theory, 2001)

Some Remarks on Equivalence of Modui of Smoothness. - Guanzhen Zhou; Songping Zhou (J. Approx. Theory, 2001)

Pointwise and global estimate for approximation by rational functions with prescribed numerator degree. - Dansheng Yu; Ping Zhou; Songping Zhou (J. Approx. Theory, 2010)