The techniques of sparkling winemaking did not originate with the Benedictine monk Dom Pérignon, nor was the first purposely sparkling wine produced in the region of Champagne. Regardless, through centuries of refinement Champagne has become the world’s leading sparkling wine and the vinous embodiment of luxury and celebration.
Linda Adams other publications are wrong :)
But don't take my word for it; check out the link to the original INAO file on our Champagne AOP compendium page, and find out for yourself!