Originally published: in Philosophical Transactions of the Royal Society of London, series A, vol.315 (no.1533), pages 333-469.
Pages also numbered 335-469.
New developments in the theory and application of solitons : proceedings of a Royal Society discussion meeting held on 1 and 2 November 1984. ISBN 0854032517. Published by The Royal Society in 1985. Publication and catalogue information, links to buy online and reader comments.