1. DOGAROGLU, M., PEKEL, E., 1982. Comparison of performances of important honeybee (Apis mellifera L.) races and ecotypes under Cukurova region conditions. Degree Diss., Cukurova University, Adana, Turkey.
2. FıRATLı, C., BUDAK, M.E., 1994. Physiological, Morphological and Behavioural characteristics of honeybees’ (Apis mellifera L.) colonies constituted with queens reared by various apiaries in Turkey. Ankara University Agriculture, Faculty Press, Ankara, Turkey.
3. GENC, F., 1990. Effects of Varroa Infestation on wintering ability and feeding, flovering area and weight of queens at emergence on colony performance. Degree Diss., Atatürk University, Erzurum, Turkey.
4. GENCER, H.V., 1996. A study on determination of behavioral and structural characteristics of middle anatolia honeybee ecotypes.(A. mellifera anatoliaca).Degree Diss., Ankara University, Turkey.
5. GOODWıN, M., EATON, V.C., 2001. Control of Varroa a guide for New Zealand beekeepers. New Zealand Ministry of Agriculture and Forestry. Home page address: http://www.nzfsa.govt.nz.