1. Hall RD (1991) The initiation and maintenance of callus cultures of carrot and tobacco. In: Lindsey K (ed) Plant tissue culture manual. Supplement 3. Kluwer, The Netherlands, pp 1–19
2. Thorpe TA (1980) Organogenesis in vitro: structural, physiological and biochemical aspects. Int Rev Cytol Suppl 11A:71–111
3. Wagley LM, Gladfelter HJ, PHILLIPS GC (1987) De novo shoot organogenesis of Pinus eldarica Medw. in vitro. II. Macro- and micro-photographic evidence of de novo regeneration. Plant Cell Rep 6:167–171
4. Smith RH (1992) Plant tissue culture. Techniques and experiments. Academic, San Diego
5. Collin HA, Edwards S (1998) Plant cell culture. Springer, New York, NY