Fantuzzi, Felipe The Nature of the Singlet and Triplet States of Cyclobutadiene as Revealed by Quantum Interference. [electronic resource] - Chemphyschem : a European journal of chemical physics and physical chemistry Jan 2016 - 288-95 p. digital Publication Type: Journal Article ISSN: 1439-7641 Standard No.: 10.1002/cphc.201500885 doi