Berthier, L., Marchal, R., & Maujean, A. (1996). Comparison of pectolytic and proteolytic activities of six clarifying commercial preparations. Incidence of secondary enzymatic activities on proteins in Champagne musts. OENO One, 30(2), 103–111. https://doi.org/10.20870/oeno-one.1996.30.2.1105