D. Ouachem and N. Kaboul, “The Marl as a Natural Supply on Broiler Chicken Feed: Effects on the Starter Performance, the Abdominal Fat and the Dropping Moisture”, Int. J. Poult. Sci., vol. 11, no. 3, pp. 225–228, Feb. 2012, doi: 10.3923/ijps.2012.225.228.