Alsaiyah, Mohamed A.M., Ebssa, Lemma, Zenner, Annemie N.R.L., O'Callaghan, Kathryn M. and Griffin, Christine (2009) Sex ratios and sex-biased infection behaviour in the entomopathogenic nematode genus Steinernema. International Journal for Parasitology, 39. pp. 725-734. ISSN 0020-7519