1. The effect of the plant growth-regulator 4-chloro-2 methylphenoxyacetic acid on mitosis in the onion (Allium cepa);Doxey;Annals of Botany, N. S.,1949
2. Levan , A. 1949 The influence on chromosomes and mitosis of chemicals, as studied by the Allium test 325 337
3. Naphthalene acetic acid in the Allium test;Levan;Hereditas,1949
4. Spontaneous chromosome fragmentation in seedlings of Vicia faba;Levan;Hereditas,1950
5. Cytological studies of the effect of 2, 4-dichloro-phenoxyacetic acid, 2-methyl, 4-chlorophenoxyacetic acid, and 2, 4, 5-trichlorophenoxyacetic acid on Allium cepa;Nygren;Ann. R. Agric. Coll. Sweden,1949