Nowick, James S.; Feng, Qing; Tjivikua, Tjama; Ballester, Pablo; Rebek Jr., Julius
Journal of the American Chemical Society, 1991 , vol. 113, # 23 p. 8831 - 8839
The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
Patent: US5061399 A1, 1991 ;