1. European Union. Program for raising rare breeds of farm animals. Regulation 1992, no. 2078.
2. Ministry of Agriculture of Greece. Measures for maintenance and protection of local breeds of farm animals. Presidential Decree 1995, no. 434.
3. Katsaounis N. Sheep breeding. Thessaloniki: Kyriakidis, 1980. p. 293 [in Greek].
4. A note on the seasonal estrus period in three breeds of Greek dairy sheep;Vosniakou;Anim Prod,1989
5. Boyazoglou JG. Milk breeds of sheep. In: Maijala K, editor. Genetic resources of pig, sheep and goat. Amsterdam: Elsevier, 1991. p. 243–55.