, 2000, Aesthetic symbiosis and spiritual quest: Grünewald's Isenheim altarpiece in Hindemith's opera Mathis der Maler, in M. Kronegger (ed.), The orchestration of the arts — a creative symbiosis of existential powers, Dordrecht, Kluwer, pp. 17-51.
, 1996a, 'Introduction', The American Journal of Semiotics 13 (1-4), 1-8.
, 1996b, 'Religious symbolism in the music of Olivier Messiaen', The American Journal of Semiotics 13 (1-4), 277-309.