1. D. M. WISEMAN, in “Polymeric site-specific pharmacotherapy” (John Wiley and Sons, Chichester, 1994) p. 369.
2. E. P. GOLDBERG, J. W. BURN and Y. YAACOBI, Prog. Clin. Biol. Res. 381 (1993) 191.
3. G. S. DIZEREGA, Prog. Clin. Biol. Res. 381 (1993) 1.
4. G. S. DIZEREGA, Fertil. Steril. 61 (1994) 219.
5. D. M. WISEMAN, J. R. TROUT, R. R. FRANKLIN and M. P. DIAMOND, J. Reprod. Med. 44 (1998) 325.