How Far Does the First Element Dominate?: 10649. - Emeric Deutsch; John H. Lindsey II; Michael H. Andreoli; Robert A. Agnew; Robin J. Chapman; Michael P. Cohen; M. N. Deshpande; M. D. Ernst; Ellen Hertz; L. R. Ivory; Walther Janous; Gregory Keselman; et al. (Am. Math. Mon., 2000)

Tiling Rectangles with Trominoes: 10641. - Jerrold R. Griggs; Michael Woltermann; B. Borchers; David Callan; Robin J. Chapman; J. Chilcott; Paul Cull; A. Ferguson; K. Martin; G. G. Gagola; Solomon W. Golomb; J. Guilford; et al. (Am. Math. Mon., 2000)

The Smoothest and Roughest Permutations: 10725. - Vasile Mihai; Michael Woltermann (Am. Math. Mon., 2001)