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)