1. The White Paper on Food Safety, European Commission, Brussels, 2000, http://europa.eu.in/comm/dgs/health_consumer/library/pub/pb06_en.pdf.
2. D.C. Hooper, J.S. Wolfson, Quinolone Antimicrobial Agents, 2nd ed., American Society for Microbiology, Washington, DC, 1993.
3. G. Pascal, H. Reichenbach, K. Jones, P. Courvalin, in: Proceedings of the Conférence Internationale sur la Résistence aux Substances Antimicrobiennes, European Commission, Brussels, 1999.
4. H. Oka, H. Nakazawa, K. Harada, J.D. MacNeil (Eds.), Chemical Analysis for Antibiotics Used in Agriculture, AOAC International, Arlington, VA, 1995.
5. Council Directive 96/23/EC on use of antibiotics in agriculture, Off. J. Eur. Commun. OJ L125, 23 April 1996.