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[1]Ott[JustusLiebigsAnnalenderChemie,1912,vol.392,p.285]
[1]Davies;Hambly;Semmens[JournaloftheChemicalSociety,1933,p.1309,1313,1314]
[2]Davies;Hambly;Semmens[JournaloftheChemicalSociety,1933,p.1309,1313,1314]
[1]Sherrill;Schaeffer;Shoyer[JournaloftheAmericanChemicalSociety,1928,vol.50,p.482]
[1]Rogow[ChemischeBerichte,1897,vol.30,p.1443]