1. Biverkningsnytt. Rekordantal rapporter 1992.;Läkartidningen,1993
2. Antonsson T Bylund R Gustafsson D Nilsson I (1994) inventors, Trypsin-like protease-inhibiting peptide derivatives, their synthesis and therapeutic use. PTC patent application WO 94/29336.
3. Antonsson T Gustafsson D Hoffmann K-J Nyström J-E Sörensen H Sellén M (1997) inventors, Preparation of peptide derivatives as prodrug of thrombin inhibitors. PTC patent application WO 97/23499.
4. Evaluation of using dog as an animal model to study the fraction of oral dose absorbed of 43 drugs in humans.;Chiou;Pharm Res (NY),2000
5. Clement B (1998) inventor, Pharmaceutical preparation. Patent application US 5,786,383.