References
- Raghunathon Y., Amsel L., Hinsvork O., Bryant W. J. Pharm. Sci. 1981; 70: 379
- Macek T. J., Shoop C. E., Stauffer O. R. U.S. Patent 3 1970; 499: 960
- Motycka S., Nairn J. C. J. Pharm. Sci. 1978; 67: 500
- Motycka S., Nairn J. C. J. Pharm. Sci. 1978; 68: 211
- Schmidt D. C., Stockebrand B. Pharmaceutical Research 1986; 3: 235