1. Belliard, G., Pelletier, G., Férault, M.: Fusion de protoplastes de Nicotiana tabacum à cytoplasmes différents: étude des hybrides cytoplasmiques néo-formés. C.R. Acad. Sci. Paris 284, 749–752 (1977)
2. Carlson, P.S., Smith, H.H., Dearing, R.D.: Parasexual interspecific plant hybridization. Proc. nat. Acad. Sci. (Wash.) 69, 2292–2294 (1972)
3. Chen, K., Wildman, S.G., Smith, H.H.: Chloroplast DNA distribution in parasexual hybrids as shown by polypeptide composition of fraction I protein. Proc. nat. Acad. Sci. (Wash.) 74, 5109–5112 (1977)
4. Chupeau, Y., Bourgin, J.P., Missonier, C., Dorion, N., Morel, G.: Preparation et culture de protoplastes de divers Nicotiana. C.R. Acad. Sci. Paris 278, 1565–1568 (1974)
5. Constabel, F., Weber, G., Kirkpatrick, J.W., Pahl, K.: Cell division of intergeneric protoplast fusion products. Z. Pflanzenphysiol. 79, 1–7 (1976)