Occorsio, D., and A. C. Simoncelli. “Generalized Stancu-Pólya Curves”. Rev. Anal. Numér. Théor. Approx., vol. 27, no. 1, Feb. 1998, pp. 127-46, https://ictp.acad.ro/jnaat/journal/article/view/1998-vol27-no1-art14.