Wilhelmy, C., C. Pavez, E. Bordeu, and N. Brossard. 2021. “A Review of Tannin Determination Methods Using Spectrophotometric Detection in Red Wines and Their Ability to Predict Astringency”. South African Journal of Enology and Viticulture 42 (1):1. https://doi.org/10.21548/42-1-3852.