Research Output per year
In the original publication of the article, the Acknowledgement section was not included. The section is given below.
Research in this paper was partially supported by research leave from Lingnan University, and was substantially supported by a General Research Fund grant from the Research Grants Council of Hong Kong SAR, China (LU13601218). Thanks to Tristram McPherson, Dan Waxman, and the two anonymous referees, all of whom provided exceptional criticism, objections, and positive suggestions, without which this would be a much weaker paper.