by Dai, S. H, Lin, C. Y, Rao, D. V, Stuber, F. A, Carleton, P. S, Ulrich, Henri
Published in Journal of organic chemistry (01.05.1985)

by von E. Doering, W, Benkhoff, Johannes, Carleton, Peter Smart, Pagnotta, Marco
Published in Journal of the American Chemical Society (12.11.1997)