1. Ahlstrom, H., Persson, H. and Borjesson, T. 1988. Fertilization in a mature scots pine ( Pinus sylvestris L.) stand effects and fine roots. Plant and Soil, 106: 179–190.
2. Alexander, I.J. and Fairley, RI. 1983. Effect of N fertilization on population of pine roots and mycorrhizas in spruce humus. Plant and Soil, 71: 49–53.
3. Bansal, M. and Mukerji, K.G. 1992. Effect of VAM and Phosphorus fertilisers on Leucaena Root productivity. In “Root Ecology and its Practical Applications”. 3rd ISSR Symp. Wien“ (eds. Kutschera, L., Hiibl, E., Lichtengger, E., Persson, H. and Sobotik, M.). Verein fur Wurzet forschung, A-9020 Klagunfurt. pp. 543–545.
4. Bansal, M. and Mukerji, K.G. 1993. Dead fine roots-a neglected biofertiliser. In: “Plant Nutrition–from Genetic Engineering to field practice” (ed. Barrow, N.J. ). Kluwer Academic Publishers, pp. 547–550.
5. Banal, M. and Mukerji, K.G. 1994. Efficacy of root litter as a biofertiliser. Soil Biology Fertility, 18: 228–230.