Determination of beta-lactams, fluoroquinolones, sulfonamides/trimethoprim, tetracyclines and colistin in poultry excreta by UHPLC-MS/MS, Gorissen, B, Reyns Tim, Devreese M., De Backer P., Van Loco Joris, and Croubels S. , 7th Internaltional Conference on Antimicrobial Agents in Veterinary Medicine (AAVM 2014), 16/9/2014, Issue AAVM, NA, (2014)