E. O. Obidiegwu and Lawal, G. I.E. D. 3. M., “PHYSICO-MECHANICAL AND THERMAL PROPERTIES OF INSULATING REFRACTORY BRICKS DEVELOPED FROM IKORODU AND OSIELE FIRECLAYS AND AGROFORESTRY WASTES”, UJMST, vol. 4, no. 2, pp. 47-56, Feb. 2019.