1. Kritische Bemerkungen und Vorschläge zur quantitativen Vegetationsanalyse;Barkman;Acta Bot. Neerl.,1964
2. The effects on beneficial arthropods of exclusion of herbicides from cereal crop edges;Chiverton;J. Appl. Ecol.,1991
3. Het vegetatieonderzoek van de provincie Zuid-Holland. Deelrapport I: verspreiding en ecologie van wilde planten in Zuid-Holland;Clausman,1984
4. Unsprayed field margins: implications for environment, biodiversity and agricultural practice;De Snoo,1995
5. Integral hazard assessment of side-effects of pesticides in the Netherlands—a proposal;De Snoo;J. Environ. Toxicol. Chem.,1994