A Composition as a Problem IV/1–2. Proceedings of the Fourth International Conference on Music Theory: Tallinn, April 3–5, 2003. Ed. by Mart Humal.
Available in two volumes:
A Composition as a Problem IV/1, ISBN 9985-9496-2-5
A Composition as a Problem IV/2, ISBN 9985-9496-3-3
Estonian Academy of Music, 2004
