Phan Thanh Tam, Nguyen Hai Van, and Nguyen Ngoc Hieu. 2025. “Research on the Production of High-Purity Calcium Lactate from Poultry Eggshells and Their Application in Food ”. Vietnam Journal of Science, Technology and Engineering 67 (2):67-73. https://doi.org/10.31276/VJSTE.2024.0054.