Griffin, Christine, Dix, Ilona, Joyce, Susan A., Burnell, Ann and Downes, Martin (1999) Isolation and characterisation of Heterorhabditis spp. (Nematoda: Heterorhabditidae) from Hungary, Estonia and Denmark. Nematology, 1 (3). pp. 321-332.
Griffin, Christine, Joyce, Susan A., Dix, Ilona, Burnell, Ann and Downes, Martin (1994) Characterisation of the entomopathogenic nematode Heterorhabditk (Nematoda : Heterorhabditidae) from Ireland and Britain by molecular and cross-breeding techniques,and the occurrence of the genus in these islands. Fundalmental Applied Nematology, 17 (3). pp. 245-253.
Joyce, Susan A., Burnell, Ann and Powers, Thomas O. (1994) Characterization of Heferorhabdifis Isolates by PCR Amplification of Segments of mtDNA and rDNA Genes'. Journal of Nematology, 26 (3). pp. 260-270.