The Effect of PIS Region on Horned or Polled Phenotype Traits in China Guanzhong Dairy Goats, 2022. Zilu Zhang, Ning Wang, Ce Hou, Laiba Shafique, Saif ur Rehman, Zhuyue Wu, Zhiqiang Wang, Mingsong Wei and Kuiqing Cui. Pakistan J. Zool., 54: 2221-2228. 
DOI: https://dx.doi.org/10.17582/journal.pjz/20200520110523