1. Evaluation of a simplified blood pepsinogen assay;Berghen;Am. J. Vet. Res.,1987
2. Evaluation of two control strategies with the oxfendazole pulse release bolus for the suppression of gastro-intestinal parasitism in calves with special reference to gastrin and pepsinogen changes;Berghen;Vlaams Diergeneeskd. Tijdschr.,1989
3. Time of release of oxfendazole from an oxfendazole pulse-release bolus;Bogan;Vet. Rec.,1987
4. Die Diagnose des Magen-Darm-Strongylidenbefalls des Schafes durch Differenzierung der freilebenden dritten Larven;Eckert;Zbl. Vet. Med.,1960
5. Parasite control in transhumant situations;Eckert;Vet. Parasitol.,1994