1. Antonkiewicz, J., Michalak, P., Targosz, B., 2015. An application for a patent for an invention entitled: A method for producing fertilizer from sewage sludge. Application number: P.411157.
2. Effect of inorganic and organic fertilizers on the growth and yield of garlic crop (Allium sativum L.) in Northern Ethiopia;Assefa;J. Agric. Sci.,2015
3. Banach, M., Kowalski, Z., Wzorek, Z., 2010. Utilization of selected slaughterhouse waste by hydrolysis. Technical Transactions. Chemistry. 1-Ch, 333-341.
4. Uses and management of poultry litter;Bolan;World’s Poult. Sci. J.,2010
5. The importance and ecology of yeasts in soil;Botha;Soil Biol. Biochem.,2011