1. Chemical Information;;NCI Investigational Drugs,1988
2. National Cancer Institute contract to Midwest Research Institute, No. N01-CM-37555.
3. National Cancer Institute contract to University of Kentucky, Project No. 84-551.
4. U.S. Patent 4 727 064;Pitha;February,1988
5. Severe hypervitaminosis A in siblings: Evidence of variable tolerance to retinol intake