R. Radu-Rusu, M. Usturoi, A. Leahu, S. Amariei, C. Radu-Rusu, and I. Vacaru-Opriş, “Chemical features, cholesterol and energy content of table hen eggs from conventional and alternative farming systems”, SA J. An. Sci., vol. 44, no. 1, pp. 33–42, Apr. 2014.