1. Agrawal, V.; Gupta, S. C. In vitro plantlet development from 25-year-old trees of Populus × euramerican—a hybrid tree. Plant Sci. 78:99–105; 1991.
2. Agrawal, V.; Prakash, S.; Gupta, S. C. Effective protocol for in vitro shoot production through nodal explants of Simmondsia chinensis. Biol. Plant. 45:449–453; 2002.
3. Agrawal, V.; Sardar, P. In vitro organogenesis and histemorphological investigations in senna (Cassia angustifolia)—a medicinally valuable shrub. Physiol. Mol. Biol. Plant 9:1–10; 2003.
4. Bajaj, Y. P. S. Biotechnology of tree improvement for rapid propagation and biomass energy production. In: Bajaj, Y. P. S., ed. Biotechnology in agriculture and forestry, vol. 1, Trees, 1. Berlin: Springer-Verlag; 1986:1–23.
5. Bhojwani, S. S.; Razdan, M. K. Plant tissue culture: theory and practice. Amsterdam: Elsevier; 1996.