Ferguson, George, Gallagher, John F. ORCID: 0000-0002-7112-7450, Maguire, Anita R., Spalding, Trevor R., Peters, G. and Morris, John R. (1993) Structure of 1-(3-butynyl)pyridinium p-toluenesulfonate. Acta Crystallographica Section C, 49 (12). pp. 2160-2162. ISSN 0108-2701