1. Barthlott, W., Ehler, N.: Rasterelektronenmikroskopie der Epidermisoberflächen von Spermatophyten. Wiesbaden: Franz-Steiner 1977
2. Gamborg, O.L., Miller, R.A., Ojima, K.: Nutrient requirements of suspension cultures of soybean root cells. Exp. Cell Res. 50, 151?158 (1968)
3. Gleba, Y.: Extranuclear inheritance investigated by somatic hybridization. In: Frontiers of plant tissue culture 1978, pp. 95?102. Thorpe, T.A., ed. Calgary: University Press 1978
4. Gleba, Y., Hoffmann, F.: Hybrid cell lines Arabidopsis thaliana+Brassica campestris: no evidence for specific chromosome elimination. Mol. Gen. Genet. 165, 257?264 (1978)
5. Gleba, Y., Butenko, R.G., Sytnik, K.M.: Protoplast fusion and parasexual hybridization in Nicotiana tabacum. Dokl. Akad. Nauk SSSR 221, 1196?1198 (1975)