Meiji Seika Kaisha Ltd.
Patent: EP2133356 A1, 2009 ;
Location in patent: Page/Page column 11 ;

FBC Limited
Patent: US4399287 A1, 1983 ;

Zeiss, Hans-Joachim
Journal of Organic Chemistry, 1991 , vol. 56, # 5 p. 1783 - 1788

Odinets, I. L.; Antonov, E. A.; Petrovsky, P. V.; Morozik, Yu. I.; Krivolapov, Yu. A.; et al.
Russian Chemical Bulletin, 1993 , vol. 42, # 1 p. 154 - 161
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1993 , # 1 p. 170 - 177

Odinets, I. L.; Antonov, E. A.; Petrovsky, P. V.; Morozik, Yu. I.; Krivolapov, Yu. A.; et al.
Russian Chemical Bulletin, 1993 , vol. 42, # 1 p. 154 - 161
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1993 , # 1 p. 170 - 177

Zeiss, Hans-Joachim
Journal of Organic Chemistry, 1991 , vol. 56, # 5 p. 1783 - 1788