Sammes, Michael P.; Lee, Cheuk Man; Katritzky, Alan R.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1981 , p. 2476 - 2482

Osuch; Levine
Journal of Organic Chemistry, 1957 , vol. 22, p. 939,942

Lee, Cheuk Man; Sammes, Michael P.; Katritzky, Alan R.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1980 , p. 2458 - 2462