Butler, Richard N.; Fitzgerald, Kevin J.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1989 , p. 155 - 157
Forsberg, John H.; Spaziano, Vincent T.; Balasubramanian, Trichey M.; Liu, Gordon K.; Kinsley, Steven A.; et al.
Journal of Organic Chemistry, 1987 , vol. 52, # 6 p. 1017 - 1021
Butler, Richard N.; Fitzgerald, Kevin J.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1989 , p. 155 - 157