1. Tal, P.P., M.S. Mahmud, M.A. Mbah and R.U. Ndubuisi, 2022. Maximum and minimum works performed by T˜_n. Mod. Appl. Sci., 16: 23-29.
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2. Onyenegecha, C.P., C.J. Okereke, I.J. Njoku, C.A. Madu, R.U. Ndubuisi and U.K. Nwajeri, 2022. Approximate solutions of schrodinger equation and expectation values of inversely quadratic hellmann-kratzer (IQHK) potential. Eur. Phys. J. Plus, Vol. 137. 10.1140/epjp/s13360-021-02315-w.
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3. Nkwoada, A., C. Amakom, U. Ndubuisi and M. Okoro, 2022. Assessment of COVID-19 pandemic using multivariate data analysis: A case for Nigeria. Asian J. Res. Infect. Dis., 9: 42-52.
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4. Ndubuisi, U.R., C.C. Ugochukwu, M.C. Obi, O.G. Udoaka and K.P. Shum, 2022. Representation of rhotrix type A semigroups. J. Math. Comput. Sci., Vol. 12. .
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5. Ndubuisi, R.U., U.K. Nwajeri, C.P. Onyenegecha, K.M. Patil, O.G. Udoaka and W.I. Osuji, 2022. Linear mappings in paraletrix spaces and their application to fractional calculus. Notes Number Theory Discrete Math., 28: 698-709.
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6. Ndubuisi, R.U., R.B. Abubakar, N.N. Araka and I.J. Ugbene, 2022. The concept of rhotrix type a semigroups. J. Math. Comput. Sci., Vol. 12. .
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7. Jeff, U.I., O.O. Suraju and N.R. Ugochukwu, 2022. Digraph of the full transformation semigroup. J. Discrete Math. Sci. Cryptogr., 25: 2457-2465.
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8. Ndubuisi, R.U., R.B. Abubakar, O.G. Udoaka and I.J. Ugbene, 2021. Characterization of a heart-oriented paraletrix. J. Math. Comput. Sci., Vol. 11. .
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9. Ndubuisi, R.U., K.P. Shum, R.B. Abubakar and M.A. Mbah, 2021. A class of U-ample I-semigroups. Southeast Asian Bull. Math., 45: 355-366.
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10. Onyenegecha, C.P., U.M. Ukewuihe, A.I. Opara, C.B. Agbakwuru and C.J. Okereke et al., 2020. Approximate solutions of Schrádinger equation for the Hua plus modified Eckart potential with the centrifugal term. Eur. Phys. J. Plus, Vol. 135. 10.1140/epjp/s13360-020-00595-2.
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