49: 39.; Collective Volume, vol. 5, p. 315 ↑ John S. Swenton (1969): "Photoisomerization of cis-cyclooctene to trans-cyclooctene". Journal of Organic Chemistry, volume 34, issue 10, pages 3217–3218. doi:10.1021/jo01262a102 ↑ Royzen, Maksim; Yap, Glenn P. A.; Fox, Joseph M. (2008). "A photochemical synthesis of functionalized trans-cyclooctenes driven by metal complexation".