1. M.E. Wolff, Burgers Medicinal Chemistry, 4th Edition, John Wiley & Sons, New York, 1979, p. 428.
2. C. Cosar, L. Julon, Ann. Inst. Pasteur. 96 (1959) 238.
3. C. Cosar, P. Ganter, L. Julion, Presse Meed. 69 (1961) 1069.
4. C. Cosar, C. Cusan, R. Horclois, R.M. Jacob, J. Robert, S. Tchelitche, R. Vaupre, Arzneim-Forsch. 16 (1966) 23.
5. S.J. Powell, I. McLeod, A.J. Wilmot, R. Elsdon-Dew, Lancet 2 (1966) 1329.