Buchka; Sprague
Chemische Berichte, 1890 , vol. 23, p. 849,852
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Sprague
Journal of the Chemical Society, 1891 , vol. 59, p. 332,339
Elnagdi, Mohamed Hilmy; Ghozlan, Said Ahmed Soliman; Abdelrazek, Fathy Mohamed; Selim, Maghraby Ali
Journal of Chemical Research, Miniprint, 1991 , # 5 p. 1021 - 1032