Koohpar, H. K.; Sayyahzadeh, H.; Pirsaraei, Z. A. Comparing the Natural Mating With Artificial Insemination (A.I) at Mazandran Native Hen. Int. J. Poult. Sci. 2010, 9 (7), 711–715. https://doi.org/10.3923/ijps.2010.711.715.