Staroń, P., Z. Kowalski, A. Staroń, and M. Banach. “Thermal Conversion of Granules from Feathers, Meat and Bone Meal and Poultry Litter to Ash With Fertilizing Properties”. Agricultural and Food Science, vol. 26, no. 3, Oct. 2017, pp. 173–180, doi:10.23986/afsci.59561.