Dubravský, Viliam Karol Ondreička / By Viliam Dubravský; Ed. Dagmar Kotová. - Bratislava : Pallas, 1975. - 20 s. : 16 l. col. ill. ; 14 cm. [catalogue] - Malá Galéria Zv. 4 . Subjects--Personal Names: Ondreička, Karol 1898-1961 Subjects--Topical Terms: Art--Engraving--Slovakia--XIX-XX cent.