1. The current regime implemented by the Norwegian authorities is not to implement the second extinction strategy (S. Andersson, personal communication).
2. Been, T.H., Schomake, C.H., 1998. Quantitative Studies on the Management of Potato Cyst Nematodes (Globodera spp.) in the Netherlands. PhD dissertation no. 2537, Wageningen, Landbouwuniv., ISBN 90-5485-960-1.
3. Effects of potato-cyst nematodes (Globodera pallida) and soil pH on root growth, nutrient uptake and crop growth of potato;De Ruijter;Eur. J. Plant Patol.,1999
4. Modelling nematode population growth and damage;Ehwaeti;Crop Protect.,2000
5. Storage of potato cyst nematodes at −80°C;Folkertsma;Fundam. Appl. Nematol.,1997