1. Ahti, T., Hämet-Ahti, L., and Jalas, J., 1968, Vegetation zones and their sections in northwestern Europe, Ann. Bot. Fenn. 5: 169–211.
2. Andersson, H., 1970, Notes on North European Lonchoptera (Dipt., Lonchopteridae) with lectotype dsignations, Entomol. Tidskrift 91: 42–45.
3. Asher, J. H., Jr., 1970, Parthenogenesis and genetic variability. II. One-locus models for various diploid populations, Genetics 66: 369–391.
4. Astaurov, B. L., 1940, Artificial parthenogenesis in the silk-worm (Bombyx mori L.), Akad. Nauk S.S.S.R., Moscow
5. Astaurov, B. L., 1962, The present state of problems of artificial parthenogenesis in the silkworm. Diploid and polyploid parthenogenesis in Bombyx mori L., B. mandarina Moore and in the hybrids, Sympos. Genet. et Biol. Italica 9: 1–20.