At the end of Lemma 2, "[9, Th. 8, (39)]" seems to be referring to corollary 1 of Theorem 8 on page 70 of [1], equation (3.30). Maybe "(39)" is meant to be "(3

At the end of Lemma 2, "[9, Th. 8, (39)]" seems to be referring to corollary 1 of Theorem 8 on page 70 of [1], equation (3.30). Maybe "(39)" is meant to be "(30)". Their argument for Theorem 1 seems not-crazy, and quite accessible. [1] https://projecteuclid.org/download/pdf_1/euclid.ijm/1255631807 https://projecteuclid.org/download/pdf_1/euclid.ijm/12556318...