Clayden, Jonathan, Lemiègre, Loïc, Morris, Gareth A., Pickworth, Mark, Snape, Timothy J. ORCID: 0000-0003-2766-4491 and Jones, Lyn (2008) Helix Persistence and Breakdown in Oligoureas of Metaphenylenediamine: Apparent Diastereotopicity as a Spectroscopic Marker of Helix Length in Solution. Journal of the American Chemical Society, 130 (45). pp. 15193-15202. ISSN 0002-7863