Izvornik: Duo Concertante. Score and part. Henri Bok and Evert Le Mair. Ivana Loudova. Bass Clarinet sheet music.
Prijevod: Duo koncertirajuĘu. , and a year later played it with the marimbaphonist Miroslav Kokoska in Prague. Bas Klarinet note. Marimbu note.
