Borkovec, Michal, Marcin Brynda, Ger J. M. Koper, and Bernard Spiess. “Resolution of Microscopic Protonation Mechanisms in Polyprotic Molecules”. CHIMIA 56, no. 12 (December 1, 2002): 695. Accessed April 9, 2025. https://www.chimia.ch/chimia/article/view/2002_695.