M.  Holterman, Rybarczyk, K., van den Elsen, S., van Megen, H., Mooyman, P., Santiago, R. Pena, Bongers, T., Bakker, J., and Helder, J., ?A ribosomal DNA-based framework for the detection and quantification of stress-sensitive nematode families in terrestrial habitats?, Molecular Ecology Resources, vol. 8, pp. 23-34, 2008.