A. M. Abbas, K. M. Aboshanab, W. F. Elkhatib, M. M. Aboulwafa, and N. A. Hassouna, “Improvement of Bioconversion of Vitamin D3 into Calcitriol by Actinomyces hyovaginalis through Protoplast Fusion and Enzyme Immobilization”, Int. J. Biotech. Well. Indus., vol. 6, no. 1, pp. 32–40, Apr. 2017.