OfonU. A., Ndubuisi-NnajiU. U., UdofiaG. E., FatunlaO. K., and ShaibuS. E., “IMPROVING BIOENERGY PRODUCTION FROM ANAEROBIC CO-DIGESTION OF PAPER WASTE AND CHICKEN MANURE USING COCONUT SHELL BIOCHAR”, FJS, vol. 8, no. 6, pp. 107 - 113, Dec. 2024.