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http://dx.doi.org/10.1007/s11458-005-0019-0
An Approach to Molecular Baskets with Ester-Crown Handles from Diphenylglycoluril
Authors: Liu Qingsheng, Gong Shuling and Chen Yuanyin
Frontiers of Chemistry in China (2006) V.1, Number 1 p. 108-111