The Gas-Phase Acidities of Very Strong Neutral Bronsted Acids By courtesy of: Ilmar A. Koppel, Robert W. Taft, Frederick Anvia, Shi-Zheng Zhu, Li-Quing Hu, Kuang-Sen Sung, Darryl D. DesMarteau, Lev M. Yagupolskii, Yurii L. Yagupolskii, and et al. JACS, 1994, 116, 3047-57