1. Boveri (Th.), 1915. — Ueber die Entstehung der Eugsterschen Zwitterbienen.Roux's Arch. Entwicklungsmech.,41, p. 264–311.
2. Cale (G. H.) undGowen (J. W.), 1956. — Heterosis in the Honey Bee (Apis mellifera L.).Genetics,41, p. 292–303.
3. Cooper (K. W.), 1959. — A bilaterally gynandromorphicHypodynerus and a summery of cytological origins of such Hymenoptera.Bull. Florida State Mus.,5, p. 25–40.
4. Dalla Torre (K. W. v.) undFriese (H.), 1899. — Die hermaphroditen und gynandromorphen Hymenopteren.Ber. naturw.-med. Ver. Innsbruck,24, p. 1–96.
5. Drescher (W.) undRothenbuhler (W. C.), 1963. — Gynandromorph production by egg chilling.J. Hered.,54, p. 194–201.