Dong, Jia Jia; Fananas-Mastral, Martin; Alsters, Paul L.; Browne, Wesley R.; Feringa, Ben L. Angewandte Chemie - International Edition, 2013 , vol. 52, # 21 p. 5561 - 5565 Angew. Chem., 2013 , vol. 125, # 21 p. 5671 - 5675,5