Nikogosyan2014/2019
Nikogosyan, David N. 2014 (revised and updated 2019). Marks of French Silver-Plated Cutlery in the XIXth Century. Christofle, Veuve Charles Halphen, Gombault-Desclercs & Manufacture de l’Alfénide. Association of Small Collectors of Antique Silver ASCAS, Artickle 180. http://www.ascasonline.org/articoloMARZ180.html (Haettu 18.1.2021.)