M. Ndje
National School of Agro-Industrial Sciences, University of Ngaoundere, Cameroon

National School of Agro-Industrial Sciences, University of Ngaoundere, Ngaoundere, Cameroon

J. M. Nyobe Yome
University of Douala, Cameroon

Faculty of Industrial Engineering, University of Douala, Carrefour Ange Raphaël, Douala, Cameroon

A. T. Boum
Higher Technical Teachers Training College, University of Buea, Cameroon

Higher Technical Teachers Training College, University of Buea, Kumba, Cameroon

L. Bitjoka
National School of Agro-Industrial Sciences, University of Ngaoundere, Cameroon

National School of Agro-Industrial Sciences, University of Ngaoundere, Ngaoundere, Cameroon

J. C. Kamgang
National School of Agro-Industrial Sciences, University of Ngaoundere, Cameroon

National School of Agro-Industrial Sciences, University of Ngaoundere, Ngaoundere, Cameroon