Schultz, Rose Ann; Schlegel, Eric; Dishong, Dennis M.; Gokel, George W.
Journal of the Chemical Society, Chemical Communications, 1982 , # 4 p. 242 - 243
Lee, Ikchoon; Choi, Young Hoon; Rhyu, Keun Woo; Shim, Chang Sub
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1989 , p. 1881 - 1886