Jay R. Goldman James T. Joichi Dennis E. White Rook Theory. V - Rook Polynomials, Möbius Inversion and the Umbral Calculus. 230-239 1976 21 J. Comb. Theory, Ser. A 2 db/journals/jct/jcta21.html#GoldmanJW76 http://dx.doi.org/10.1016/0097-3165(76)90067-4