1. CARY, C.A., AN UNIDENTIFIED FACTOR ESSENTIAL FOR RAT GROWTH, FEDERATION PROCEEDINGS 5: 128 (1946).
2. HARTMAN, A.M., OCCURRENCE IN FOODS, OF AN UNIDENTIFIED FACTOR ESSENTIAL FOR RAT GROWTH, FEDERATION PROCEEDINGS 5: 137 (1946).
3. OTT, W.H., ACTIVITY OF CRYSTALLINE VITAMIN-B12 FOR CHICK GROWTH, JOURNAL OF BIOLOGICAL CHEMISTRY 174: 1047 (1948).
4. PICCIONI, M, BOLLETTINO DELLA SOCIETA ITALIANA DI BIOLOGIA SPERIMENTALE 26: 614 (1950).
5. RANDOIN, L, BULLETIN DE LA SOCIETE SCIENTIFIQUE D'HYGIENE ALIMENTAIRE ET D'ALIMENTATION 35: 14 (1947).