Wu, Bian; Szymanski, Wiktor; Wybenga, Gjalt G.; Heberling, Matthew M.; Bartsch, Sebastian; Dewildeman, Stefaan; Poelarends, Gerrit J.; Feringa, Ben L.; Dijkstra, Bauke W.; Janssen, Dick B. Angewandte Chemie - International Edition, 2012 , vol. 51, # 2 p. 482 - 486