Hande Kucukonder, Pınar Celebi Demirarslan, Aykut Burgut and Mustafa Boga, 2019. A Hybrid Approach of Data Envelopment Analysis Based Grey Relational Analysis: A Study on Egg Yield. Pakistan J. Zool., 51: 903-912. DOI: http://dx.doi.org/10.17582/journal.pjz/2019.51.3.903.912