This web page lists the references in my paper:

"Barring Rectangles from the Plane" with Frank W. Barnes, Journal of Combinatorial Theory Series A, 33(1982), p 9-29.

• S. W. Golomb, Polyominoes, pp. 42-55, Scribner's, New York, 1965.
• M. S. Klamkin and A. Liu, "Polyominoes on the Infinite Checkerboard", J. Combin. Theory Ser. A, 28(1980), 7-16.
• D. J. Kleitman and F. Lasaga, personal communication.
• A. Schrijver (Ed.), Packing and covering in Combinatorics, pp. 182-186, Mathematisch Centrum, Amsterdam, 1979.
• J. B. Shearer, "Barring Hexominoes from the Infinite Checker- board", Studies in Applied Mathematics, 67(1982), p. 243-255.
• J. B. Shearer, "Barring the Z Pentomino from the Infinite Checkerboard", Studies in Applied Mathematics, 67(1982), p. 73-77.