C. Gropp and N. Trapp, “Complexation and Structure Elucidation of the Axial Conformers of Mono- and (±)-trans-1,2-Disubstituted Cyclohexanes by Enantiopure Alleno-Acetylenic Cage Receptors”, Chimia, vol. 72, no. 4, p. 245, Apr. 2018.