Gallardo, L., & Rahavandrainy, O. (2016). There are finitely many even perfect polynomials over $F_p$ with p + 1 irreducible divisors. Acta Mathematica Universitatis Comenianae, 85(2), 261-275. Retrieved from http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/amuc/article/view/241