BitrusB. M., NwabuezeC. M., OjarJ. U., and EyubeE. S. “RO-VIBRATIONAL PARTITION FUNCTION AND MEAN THERMAL ENERGY OF THE IMPROVED WEI OSCILLATOR”. FUDMA JOURNAL OF SCIENCES, Vol. 5, no. 1, June 2021, pp. 261 -70, doi:10.33003/fjs-2021-0501-564.