Perumal, Subbu; Chandrasekaran, Ramasubbu; Vijayabaskar, Veerappan; Wilson, David A.
Magnetic Resonance in Chemistry, 1995 , vol. 33, # 10 p. 779 - 790
Obushak, N. D.; Lesyuk, A. I.; Ganushchak, N. I.; Mel'nik, G. M.; Zavalii, P. Yu.
Journal of Organic Chemistry USSR (English Translation), 1986 , vol. 22, # 11 p. 2093 - 2097
Zhurnal Organicheskoi Khimii, 1986 , vol. 22, # 11 p. 2331 - 2336