J. Remi Dare, D. Adebayo Agunbiade, O. Kehinde Famurewa, O. Sunday Adesina, D. Funmi Adedotun, and O. Iyaniwura, “Approximation techniques for maximizing likelihood functions of generalized linear mixed models for binary response data”, IJET, vol. 7, no. 4, pp. 4911–4917, Feb. 2019, doi: 10.14419/ijet.v7i4.24842.