1. Ahuja, M.R., 1986, Perspectives in plant biotechnology, Cure. Sci., 55: 217–224.
2. Bonga, 1977, Applications of tissue culture in forestry. In: Applied and Fundamental Aspects of Plant Cell Tissue and Organ Culture ( J. Reinert and Y.P.S. Bajaj, eds.), pp. 93–107, Springer-Verlag, Berlin.
3. Bonga, J.M., 1987, Clonal propagation of mature trees: Problems and possible solutions. In: Cell and “l’issue Culture in Forestry, Vol. 1 (.I.M. Bonga and D.J. Durzan, eds.), pp. 249–271, Martinus Nijhoff Publishers, Dordrecht.
4. Brown, C.L. and Sommer, H.E., 1982, Vegetative propagation of dicotyledonous trees. In: Tissue Culture in forestry ( J.M. Bonga and D.J. Durzan, eds.), pp. 109–149, Martinus Nijhoff/Dr. W. Junk, The Hague.
5. D’Amato, F., 1977. Cytogenetics of differentiation in tissue and cell cultures. In: Applied and Fundamental Aspects of Plant Cell, Tissue and Organ Culture ( Y.P.S. Bajaj, ed.) pp. 343–357, Springer-Verlag, Berlin.