1. Comparison between defined area traps and refuge traps for sampling slugs in conservationtillage crop environment;Byers,1989
2. Evaluation of defined area trapping for estimating the density of the Grey Field Slug (Deroceras reticulatum Müller) in England;Ferguson;Ann. Appl. Biol.,1990
3. A new technique for estimating the density of the grey field slug Deroceras reticulatum;Ferguson,1989
4. Apport du piégeage dans le suivi des peuplements de limaces en grande culture;Hommay;Haliotes,1988