1. AHLOOWALIA BS 1985 Limitations to the use of somaclonal variation in crop plants. In EEC Symposium on Somaclonal Variations and Crop Improvement, Gembloux, Belgium (in press)
2. AHUJA MR 1982 Isolation, culture, and fusion of protoplasts: problems and prospects. Silvae Genet 31: 66–77
3. AHUJA MR 1983 Somatic cell differentiation and rapid clonal propagation of aspen. Silvae Genet 32: 131–135
4. AHUJA MR 1984 Protoplast research in woody plants. Silvae Genet 33: 32–37
5. AHUJA MR, HJ MUHS 1985 In vitro techniques in clonal propagation of forest tree species. In A Schäfer-Menuhr, ed, In Vitro Techniques- Propagation and Long Term Storage, Martinus Nijhoff/Junk Publ, Dordrecht, pp 41–49