Imre Jakabffy (szerk.): Ars Decorativa 8. (Budapest, 1984)

VARGA, Vera: Art Nouveau art glasses

20. Vase, István Sovánka, c. 1900. Double layered, acid-etched, irizing glass. Ht. 26,5 cm. 19. Baptizing basin, István Sovánka, c. 1896. Double layered glass, decorated with engraving, acid-etching. Ht. 145 cm.