Universities in Italy, 1500-1700 in Les universités européennes du XVI au XVIII siècle. Histoire sociale des populations étudiantes. Tome 1 : Bohême, Espagne, Etats italiens, Pays germaniques, Pologne, Provinces-uniesKAGAN, R. L.1986, pp 153-186, isbn 2-7132-0849-2, isbn 2-7132-0849-2Book

Pedro de Salazar de Mendoza as collector, scholar and patron of El Greco in El Greco: Italy and SpainKAGAN, R. L.Studies in History of Art Washington. 1983, Vol 13, espArticle

El Greco and the law in Figures of thought: El Greco as interpreter of history, tradition, and ideasKAGAN, R. L.Studies in History of Art Washington. 1981, Vol 11, pp 78-90Article

The Duke of Alcala : his collection and its evolutionBROWN, J; KAGAN, R. L.Art (The) Bulletin. 1987, Vol 69, Num 2, pp 231-255Article

Le Greco et TolèdeBROWN, J; JORDAN, W. B; KAGAN, R. L et al.1983, 238 p., isbn 90-6153-121-7Book

Le Greco et TolèdeBROWN, J; JORDAN, W. B; KAGAN, R. L et al.1983, 238 p.Book