Оригиналан: Duo Concertante. Score and part. Henri Bok and Evert Le Mair. Ivana Loudova. Bass Clarinet sheet music.
Превод: Дуо Цонцертанте. , and a year later played it with the marimbaphonist Miroslav Kokoska in Prague. Ивана Лоудова. Маримба партитион.
