References
- S. Shibata, C. Ukita, Y. Miura and T. Tamura, Japanese Med. J., 1, 152 (1948).
- C. F. Culberson, “Chemical and Biological Guide to Lichen Product,” Otto Koeltz Science Pubi., 1979, pp. 170–175.
- H. Komiya and S. Shibata, Chem. Pharm. Bull., 17, 1305 (1969).