Izuchukwu, Chinedu
Okeke, Chibueze Christian
Isiogugu, Felicia Obiageli https://orcid.org/0000-0002-3959-9562
Funding for this research was provided by:
DST-NRF Center of Excellence in Mathematical and Statistical Sciences (CoE-Mass) Johannesburg, South Africa. (BA2018/012, BA2018/024)
Article History
First Online: 25 October 2018