Al-Hassoon, A. S., Q. H. Al-Hamadany, and A. A. Mohammed. “Preparing Fish Protein Concentrate from Ray Fish by Water and Alkaline Hydrolysis and Their Physiochemical and Microbial Properties”. Mesopotamian Journal of Marine Sciences, vol. 36, no. 1, June 2021, pp. 51-58, doi:10.58629/mjms.v36i1.16.