1. Gronowitz, S. et al. Acta pharm. suec. 8, 377–390 (1971).
2. Gronowitz, S. et al. Acta pharm. suec. 8, 623–638 (1971).
3. Florentin, D., Rogues, B.-P., Metzger, J. M. & Collin, J.-P. Bull. Soc. chim. Fr. 2620–2622 (1974).
4. Mayer, H., Rapin, A. M. C., Schmidt, G. & Boman, H. G. Eur. J. Biochem. 66, 357–368 (1976).
5. Prehm, P., Stirm, S., Jann, B. & Jann, K. Eur. J. Biochem. 66, 369–377 (1976).