1. Avcin, M. (1969), Gypsy isolates in Slovenia, J. Biosoc. Sci.
1:221–233.
2. Beckman, L. (1959), A contribution to the physical anthropology and population genetics of Sweden, Hereditas
45:1–189.
3. Beckman, L., and Takman, J. (1965), On the anthropology of a Swedish Gypsy population, Hereditas
53:272–280.
4. Beckman, L., Takman, J. and Arfors, K. E. (1965), Distributions of blood and serum groups in a Swedish Gypsy population, Acta Genet. Basel
15:134–140.
5. Bernasovsky, I., Suchy, J., Bernasovska, K., and Vergova, T. (1976), Blood groups of Roms (Gypsies) in Czechoslovakia, Am. J. Phys. Anthropol.
45:277–280.