1. Ber. 29 43
2. Ber. 29 2313
3. 3 \documentclass{article}\pagestyle{empty}\begin{document} $$ -8,5^\circ=\frac{[\alpha]_D\times 2\times {1,116}}{9,61};\quad [\alpha]_D =-{36,6}^\circ, $$\end{document} D D
4. Chem. Centralbl. 70 II 1123
5. Chem. Centralbl. 74 II 1061