Information on betulin.

[1] COHEN, 1908, AR, V246, P597

[2] COHEN, 1907, ARCH PHARM, V245, P245

[3] COHEN, 1907, AR, V245, P236

[4] COHEN, 1908, ARCH PHARM, V246, P510

[5] COHEN, 1908, ARCH PHARM, V246, P515

[6] CZAPEK, 1914, BIOCH PFLANZEN, V1, P796

[7] GOODSON, 1921, BIOCH J, V12, P123

[8] KRELL, 1788, ANNALEN, P312

[9] PIEROH, 1922, THESIS HALLE

[10] PIEROH K, 1922, THESIS HALLE

[1] COHEN, 1908, AR, V246, P597

[2] COHEN, 1907, ARCH PHARM, V245, P245

[3] COHEN, 1907, AR, V245, P236

[4] COHEN, 1908, ARCH PHARM, V246, P510

[5] COHEN, 1908, ARCH PHARM, V246, P515

[6] CZAPEK, 1914, BIOCH PFLANZEN, V1, P796

[7] GOODSON, 1921, BIOCH J, V12, P123

[8] KRELL, 1788, ANNALEN, P312

[9] PIEROH, 1922, THESIS HALLE

[10] PIEROH K, 1922, THESIS HALLE