Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
As was pointed out to us by Huaxia Zeng, Theorem 1 in Bonifacio and Massó (2020), is not correct. In this note we recall former Theorem 1, exhibit a counterexample of its statement, identify the mistake in its faulty proof, and state and prove the new version of Theorem 1. At the end we give an alternative proof of Lemma 9, whose former proof used incorrectly Lemma 5.