1. Aczél, J.: A mean value property of the derivative of quadratic polynomials-without mean values and derivatives. Math. Mag. 58(1), 42–45 (1985)
2. Andersen, K.M.: A characterization of polynomials. Math. Mag. 69(2), 137–142 (1996)
3. Bailey, D.F.: A mean-valued property of cubic polynomials-without mean values. Math. Mag. 65, 123–124 (1992)
4. Davies, R.O., Rousseau, G.: A divided-difference characterization of polynomials over a general field. Aequationes Math. 55, 73–78 (1998)
5. Milne-Thomson, L.M.: The calculus of finite differences. Chelsea, New York (1981)