1. Blepharospasm;Anderson;Ophthal Plast Reconstr Surg,1998
2. Peter Bruegel the Elder. A Study of his Paintings;Barker,1927
3. The Fantasy of Pieter Bruegel;Barnouw,1947
4. Les Difformes et les malades dans l'art;Charcot,1889
5. Pieter Bruegel Alpine Fine Arts Collection;Claessens,1981