by Sirisena, U. W, Ndam, J. N, Adedire, O
Published in New trends in mathematical sciences (22.06.2020)

by Adedire, Oludare, J. N. Ndam
Published in Journal of Nigerian Society of Physical Sciences (01.05.2020)

by Ndam, J. N., Chollom, J. P., Kassem, T. G.
Published in ISRN applied mathematics (01.12.2012)

by Adedire, O., Ndam, J. N.
Published in Engineering and Applied Science Letters (31.12.2021)

by J.N. Ndam
Published in Asia Pacific journal of mathematics (2021)

by Ndam, Joel
Published in International journal of applied mathematical research (20.04.2015)