1. Bennici, A., Cionini, P. G., D'Amato, F., 1976: Callus formation from the suspensor ofPhaseolus coccineus in hormone-free medium: a cytological and DNA cytophotometric study. Protoplasma89, 251?261.
2. ?,D'Amato, F., 1978:In vitro regeneration ofDurum wheat plants. 1. Chromosome numbers of regenerated plantlets. Z. Pflanzenz�chtg.81, 305?311.
3. Caffaro, L., Dameri, R. M., Profumo, P., Bennici, A., 1982: Callus induction and plantlet regeneration inCichorium intybus L.: 1. A cytological study. Protoplasma111, 107?112.
4. Cionini, P. G., Bennici, A., D'Amato, F., 1978: Nuclear cytology of callus induction and developementin vitro. 1. Callus fromVicia faba cotyledons. Protoplasma96, 101?112.
5. D'Amato, F.,Bennici, A.,Cionini, P. G.,Baroncelli, S.,Lupi, M. C, 1980: Nuclear fragmentation followed by mitosis as mechanism for wide chromosome number variation in tissue cultures: its implications for plant regeneration. In: Plant cell cultures: Results and perspectives (Sala, F.,Parisi, B.,Cella, R.,Ciferri, O., eds.), pp. 67?72. Elsevier/North-Holland Biomedical Press.