Bartlett, P D 1,2- and 1,4-Cycloaddition to Conjugated Dienes: Dependence of products and rates on reactant structure tells something about competing reaction mechanisms. [electronic resource] - Science (New York, N.Y.) Feb 1968 - 833-8 p. digital Publication Type: Journal Article ISSN: 0036-8075 Standard No.: 10.1126/science.159.3817.833 doi