Mating flights, number of spermatozoa, sperm transfer and degree of polyandry in Apis koschevnikovi (Buttel-Reepen, 1906) G. Koeniger, N. Koeniger and S. TingekApidologie, 25 2 (1994) 224-238DOI: https://doi.org/10.1051/apido:19940209
