Literature: cf. Die Fouquet, 1860-1960, Schmuck Kunstler in Paris,

Museum Bellerive, Zurich, 1984.
Schmuck Kunst im Jugendstil,Art Nouveau Jewellery, Arnoldsche, 1999, p.33-50.
The Paris Salons 1895-1914, Jewellery,

volume 1, A-K, Alastair Duncan, 1994, p.247-260.
Art Nouveau, The French Aesthetic, Victor Arwas, 1992, p.360.