Igbani, Sunday, Bibobra Ikporo, Ibukunoluwa Awofeso, and Jeol Siepiribo. 2015. “Estimating The Weighting Effect Of Nanoparticles Of Mud-Solids And Formation-Imported-Solids While Drilling”. RA Journal Of Applied Research 1 (08):313-21. http://rajournals.in/index.php/rajar/article/view/313.