Kitagawa K, Inoue A, Shinokubo H, Oshima K
Department of Material Chemistry Graduate School of Engineering, Kyoto University Kyoto 606-8501 (Japan).
Angew Chem Int Ed Engl. 2000 Jul 17;39(14):2481-2483. doi: 10.1002/1521-3773(20000717)39:14<2481::aid-anie2481>3.0.co;2-j.