Catalogue of the Imperial Hermitage Art Gallery. Volume II. Dutch and German Painting In Russian (ask us if in doubt)/Somov V.A. Katalog kartinnoy galerei Imperatorskogo Ermitazha. Tom II. Niderlandskaya i Nemetskaya zhivopis' Series: Imperial Hermitage St. Petersburg 1893, 506 p. SKUalb86436a88529c3d36.