- Kumar, A., and A. Chandra. 1977. Hitherto little or unknown males of some Indian species of Xyleborus (Scolytidae: Coleoptera). Oriental Insects 1131-48.
- Kumar, A., and A. Youdeowei. 1983. Management of cocoa pests [Pages 186-201]. in: Pest and vector management in the tropics, with particular reference to insects, ticks, mites and snails.. Service, M. W., Youdeowei, A. (eds.) Longman Group Limited,New York, NY. xv + 399 p. pp..
- Mouli, B. C., and A. Kumar. 1988. Fungi occurring on tea and Grevillea robusta in tea plantations of southern India. Indian Phytopathology 41503.
- Kumar, N. S., P. Hewavitharanage, and N. K. B. Adikaram. 1998. Histology and fungal flora of shot-hole borer beetle (Xyleborus fornicatus) galleries in tea (Camelia sinensis). Journal of the National Science Council of Sri Lanka 26195-207.
- Hewavitharanage, P., S. Karunaratne, and N. S. Kumar. 1999. Effect of caffeine on shot-hole borer beetle (Xyleborus fornicatus) of tea (Camellia sinensis). Phytochemistry (Oxford) 5135-41.
- Kumar, N. S., H. Priyadarshine, N. K. B. Adikaram, K. N. Savitri, and P. Hewavitharanage. 1995. Attack on tea by Xyleborus fornicatus: Inhibition of the symbiote, Monacrosporium ambrosium, by caffeine. Phytochemistry 401113-1116.
- Daniel, M., and T. P. Kumar. 1979. Storage pests of arecanut—a survey . Journal of Plantation Crops 7:36-41.
- Kumar, R., and A. Youdeowei. 1983. Management of cocoa pests. Pages 186-201 in A. Youdeowei and M. W. Service (eds.), Pest and vector management in the tropics, with particular reference to insects, ticks, mites and snails. Longman Group Limited, New York, N. Y. xv + 399 p.
- Kumar, S., S. Jayaraj, and T. S. Muthukrishnan. 1979. Natural enemies of Parthenium hysterophorus Linn . Journal of Entomological Research 3:32-35.
- Kumar, P., C. Prakasan, and C. Vijayalakshmi. 1990. Coffee berry borer Hypothenemus hampei (Coleoptera: Scolytidae): first record from India . Journal of Coffee Research 20:161-164.
- Mouli, B., and P. Kumar. 1988. Fungi occurring on tea and Grevillea robusta in tea plantations of southern India . Indian Phytopathology 41:503.
- Hewavitharanage, P., S. Karunaratne, and N. Kumar. 1999. Effect of caffeine on shot-hole borer beetle (Xyleborus fornicatus) of tea (Camellia sinensis) . Phytochemistry (Oxford) 51:35-41.
- Kumar, N., P. Hewavitharanage, and N. Adikaram. 1998. Histology and fungal flora of shot-hole borer beetle (Xyleborus fornicatus) galleries in tea (Camelia sinensis) . Journal of the National Science Council of Sri Lanka 26:195-207.
- Kumar, N., H. Priyadarshine, N. Adikaram, K. Savitri, and P. Hewavitharanage. 1995. Attack on tea by Xyleborus fornicatus: inhibition of the symbiote, Monacrosporium ambrosium, by caffeine . Phytochemistry 40:1113-1116.