1. Agrawal, D. P. Metal technology of the Harappans. pp.163-168in Frontiers of Indus Civilization; Eds. B. B. Lal, S. P. Gupta;Books & Books: New Delhi,1984.
2. Epidermal and seed surface characters of plants: systematic applicability and some evolutionary aspects
3. Barthlott, W. G. Microstructural features of seed surface. pp.95-105(Heywood,V. H., Moore,D. M., ed.)In: Currentconcepts in plant taxonomy.Academic Press: London, 1984.