1. Studies of colchicine induced tetra-ploids of Trifolium hybridum L. I. Cross- and self-fertility and cytological observations;Armstrong;Can. J. Agr. Sci.,1956
2. Genetic nature of the colouring of potato tubers, sprouts and flowers;Assejeva;Works Potato Research Inst. Moscow,1935
3. Cytogenetical studies in the genus Solatnum;Bains,1972
4. Haploid plants in Solanum demissum;Bains;Nature,1950
5. Induced tetraploid Solanum species and species hybrids:meiosis and use in breeding;Beamish;Am. J. Botany,1957