Severa, Lukáš A chiral dicationic [8]circulenoid: photochemical origin and facile thermal conversion into a helicene congener. [electronic resource] - Angewandte Chemie (International ed. in English) Nov 2012 - 11972-6 p. digital Publication Type: Journal Article ISSN: 1521-3773 Standard No.: 10.1002/anie.201203562 doi