1. Al-Mashhadi, A. S., Saadi, S. R., Ismail, A. & Salji, J. P. (1987) Cultured Dairy Products J., 22(1), 24.
2. Al-Yamani, M., Hammeid, M. & Tukan, S. (1987) Dirasat, 14(11), 179.
3. Ali, M. Z. (1987) In: Traditional Fermented Foods, UNESCO Seminar, Food Research Centre, Shambat, Khartoum North, Sudan.
4. Ali, M. Z. & Robinson, R. K. (1982) Sudan Notes & Records, LXIII, 154.
5. Ali, M. Z. & Robinson, R. K. (1990) Milchwissenschaft, 45(11), 699.