1. Brzeski, M. W. 1991. Taxonomy of Geocenamus Thorne and Malek, 1968. (Nematoda: Belonolaimidae). Nematologica., 37: 125-173.
2. De Grisse, A. T. 1969. Redescription ou Modifications de Quelques Techniques Utilisées dans L’étude des Nematodes Phytoparasitaires. Mededelingen Rijksfakulteit Landbouw Wetenschappen Gent., 34: 351-369.
3. De Ley, P. and Blaxter, M. 2004. A New System for Nematoda: Combining Morphological Characters with Molecular Trees, and Translating Clades into Ranks and Taxa. Nematol. Monogr, Persp., 2: 633-653.
4. Faizyar, A. 1971. List of Plant Pests and Diseases of Economic Importance in Afghanistan. FAO Reg. Off. Near East, Cairo, UAR, 32 PP.
5. Fortuner, R. and Luc, M. 1987. A Reappraisal of Tylenchina (Nemata). 6. The Family Belonolaimidae Whitehead, 1960. Revue de Nematologie., 10: 183-202.
6. Ivanova, T.S. 1978. Ectoparasitic Nematodes of Subfamily Tylenchorhynchinae Eliava, 1964 from Tadzhikhistan. Izvestija Akademii Nauk Tadzhikhskoj SSR, Otdelenije biologicheskikh Nauk., 4: 35-46. (in Russian)
7. Kapoor, M. 1983. Taxonomic Studies on Nematodes of Some Medicinal and Aromatic Plants of North India. PhD. Thesis. Helminth. Abstr., Ser. No. 1511, 177 PP.
8. Khan, M. L. and Khan, S. H. 1977. A New and a Known Species of Tylenchus Bastian, 1865 (Nematoda: Tylenchinae) from Afghanistan. All-India Helminth. Symp., Sriangar, India, 29 PP.
9. Khan, M. L. 1982. Species of Basiria Siddiqi, 1959 Associated with Fruit Trees in India (Nematode: Psilenchinae). Indian J. Nematol., 12: 99-106.
10. Khan, M. L. and Khan, S. H. 1978. Two New and a Known Species of Tylenchus Bastian (Nematoda: Tylenchinae) from Afghanistan. Nematol. Medit., 6: 213-221.
11. Khan, M. L. and Khan, S. H. 1985. Three New species of Hoplolaiminae (Hoplolaimidae: Nematoda) with New Report of Scutellonema unum Sher, 1963 from Tunisia. Indian J. Nematol., 14: 115-120.
12. Powers, T. O., Baldwin, J. G. and Bell, A. H. 1983. Taxonomic Limits of the Genus Nagelus (Thorne and Malek, 1968) Siddiqi, 1979 with Description of Nagelus borealis n. sp. from Alaska. J. Nematol., 15: 582-593.
13. Roivainen, O. H., Siddiqi, M. R., Ahadi, Q. A. and Noori, M. A. 1988. A Survey of Plant Parasitic and Other Nematodes Associated with Field Crops and Fruit Trees in Afghanistan. FAO Plant Prot. Bull., 36: 61-67.
14. Shahina F. and Maghbool M. A. 1993. Pakcriconemoides anastomoides (Maghbool and Shahina) gen. n., Criconemoides afghanicus sp. n. and Macroposthonia curvata Alpine sub sp. n. (Nematoda: Criconematidae). Afro-Asian J. Nematol., 3: 188-195.
15. Siddiqi M. R. 1979. Taxonomy of the Plant Nematode Subfamily Merliniinae Siddiqi, 1970, with Descriptions of Merlinius processus n. sp. M. loofi n. sp. and Amplimerlinius globigerus n. sp. from Europe. Syst. Parasitol., 1: 43-59.
16. Siddiqi, M. R. 2000. Tylenchida Parasites of Plants and Insects. 2nd Edition, Commonwealth Institute of Parasitology, Slough, UK, PP. xvii and 833.
17. Wergin, W. P. 1981. Scanning Electron Microscopic Techniques and Application for Use in Nematology. In: "Plant Parasitic Nematodes", (Eds.): Zuckerman, B. M. and Rohde R. A.. Academic Press, New York, III: 175-204.