Crowden, James. “Stephen Skelton: The Knight Who Invented Champagne: How Sir Kenelm Digby Developed Strong Glass Bottles – Verre Anglais – Which Enabled Wine and Cider Makers to Produce Bottle-Fermented Sparkling Wines”. Petits Propos Culinaires, Aug. 2021, pp. 124-5, https://doi.org/10.1558/ppc.27838.