ARS Combin, vol. 107, page. 141 - 160, 2012-10
Mathematische Zeltschrift, vol. 271, no. 3-4, page. 639 - 661, 2012-08
Glasgow Mathematical Journal, vol. 54, no. 2, page. 355 - 358, 2012-05
Journal of Number Theory, vol. 132, no. 2, page. 301 - 313, 2012-02