N. O. Igwe, C. Madu, A. H. Okeahialam, O. Elem-Uche, C. U. Okereke, and C. T. Madubuike, “STATISTICAL COMPARISON OF DIFFERENT METHODS OF ESTIMATION (THE GENERALIZED LEAST SQUARES, WEIGHTED RIDGE AND, WEIGHTED LEAST SQUARES) IN THE PRESENCE OF HETEROSCEDASTICITY AND NON-NORMAL ERRORS”, TMP, vol. 7, no. 1, May 2023.