Cimoca, G., and G. Taylor. “On Rivlin’s Conjecture for Unisolvent Families”. Rev. Anal. Numér. Théorie Approximation, vol. 3, no. 1, Feb. 1974, pp. 27-32, https://ictp.acad.ro/jnaat/journal/article/view/1974-vol3-no1-art4.