1. S. S. Cohen, see Vol. I [52].
2. M. W. Slein, see Vol. V [43].
3. A NEW SPECTROPHOTOMETRIC METHOD FOR THE DETECTION AND DETERMINATION OF KETO SUGARS AND TRIOSES
4. K. Yamanaka and W. A. Wood, see this volume [106].
5. O. Touster and G. Montesi, see Vol. V [34].