Appel, H. M. 1993. Phenolics in ecological interactions: the importance of oxidation. J. Chem. Ecol., 19, 1521–1552.
doi:10.1007/BF00984895

Basotra, R., Chauhan, S. & Todaria, N. P. 2005. Allelopathic effects of medicinal plants on food crops in Garhwal Himalaya. J. Sustain. Agr., 26, 43–56.
doi:10.1300/J064v26n03_06

Bhatt, B. P. & Verma, N. D. 2002. Some Multipurpose Tree Species for Agroforestry Systems. ICAR Research Complex for NEH Region, Umiam, Meghalaya.

Bhatt, B. P., Chauhan, D. S. & Todaria, N. P. 1993. Phytotoxic effects of tree crops on germination and radicle extension of some food crops. Trop. Sci., 33, 69–73.

Bhatt, B. P., Kaletha, M. S. & Todaria, N. P. 1997. Allelopathic exclusion of understorey crops by some agroforestry tree crops of Garhwal Himalaya. Allelopathy J., 4, 321–328.

Blum, U., Shafer, S. R. & Lehman, M. E. 1999. Evidence for inhibitory allelopathic interactions: involving phenolic acids in field soils: concepts vs an experimental model. Crit. Rev. Plant Sci., 18, 673–693.
doi:10.1016/S0735-2689(99)00396-2

Chou, C. H. 1989. The role of allelopathy in phytochemical ecology. In Phytochemical Ecology: Allelochemicals, Mycotoxins and Insect Pheromones and Allomones (Chou, C. H. & Waller, G. R., eds), pp. 19–38. Academia Sinica Monograph Series No. 9.

Gantzer, E. 1960. Wirkungen von Cumarin auf Wachstums- und Entwicklungsvorgänge und seine Wanderungsfähigkeit im Pflanzengewebe. Planta, 55, 235–253.
doi:10.1007/BF01938225

Inderijt. 1996. Plant phenolics in allelopathy. Bot. Rev., 62, 186–202.

May, F. E. & Ash, J. E. 1990. An assessment of the allelopathic potential of Eucalyptus. Aust.
J. Bot., 38, 245–254.
doi:10.1071/BT9900245

Negi, B. S., Chauhan, D. S. & Todaria, N. P. 2007. Allelopathic effects of Ougeinia oojeinensis Roxb. (Fabaceae) on the germination and growth of wheat, barley and mustard. Allelopathy J., 20, 403–410.

Nishimura, H., Kaku, K., Nakamura, T., Fukuzawa, T. & Mizutani, J. 1982. Allelopathic substances (±) p-menthane-3,8-diols isolated from Eucalyptus citriodora Hook. Agr. Biol. Chem., 46, 319–320.

Razvi, S. J. H., Thir, M., Razvi, V., Kohli, R. K. & Ansari, A. 1999. Allelopathic interactions in agroforestry systems. Crit. Rev. Plant Sci., 18, 773–796.
doi:10.1080/07352689991309487

Rice, E. L. 1974. Some roles of allelopathic compounds in plant communities. Biochem. Syst. Ecol., 5, 201–206.
doi:10.1016/0305-1978(77)90005-9

Rice, E. L. 1984. Allelopathy. Academic Press, New York.

Sachan, M. S. 2006. Structure and Functioning of Traditional Agroforestry Systems Along an Altitudinal Gradient in Garhwal Himalaya. PhD thesis. H.N.B. Garhwal University, Srinagar Garhwal, Uttranchal, India.

Sharma, J. R. 1998. Statistical and Biometrical Techniques in Plant Breeding. New Age Inter­national Publication, New Delhi.

Singh, G., Sekhon, N. & Manjit, K. 1980. Effect of phenolic compounds on the yield potential of gram (Cicer arietinum L.). Indian J. Plant Physiol., 23, 20–25.

Singh, B., Uniyal, A. K., Bhatt, B. P. & Prasad, S. 2006. Effects of agroforestry tree spp. on crops. Allelopathy J., 18, 355–362.

Thapaliyal, S., Bali, R. S., Singh, B. & Todaria, N. P. 2007. Allelopathic effects of trees of economic importance on germination and growth of food crops. J. Herbs Spices Med. Plants, 13(4), 11–23.
doi:10.1080/10496470801945960

Todaria, N. P., Singh, B. & Dhanai, C. S. 2005. Allelopathic effects of tree leachate on germination and seedling growth of field crops. Allelopathy J., 15, 285–294.

Tripathi, S., Tripathi, A., Kori, D. C. & Paroha, S. 2000. Effects of Dalbergia sissoo extracts, rhizobium and nitrogen on germination, growth and yield of Vigna radiata. Allelopathy J., 7, 255–264.

Tukey, H. B. 1970. The leaching of substances from plants. Annu. Rev. Plant Physiol., 21, 305–324.
doi:10.1146/annurev.pp.21.060170.001513