Ogbiyele, Paul, University of Ibadan.
Öğrekçi, Süleyman, Amasya University.
Ogunbanjo, A. M., University of Ibadan.
Ogundiran, M. O. , Obafemi Awolowo University.
Olaleye, Sunday Julius, Obafemi Awolowo University.
Olatunji, S. O., Federal University of Technology.
Oliveira, Carla Silva, Escola Nacional de Ciências Estatísticas.
Omidi, M. R., Kermanshah University of Technology.
Ortega-Gutiérrez, Israel, Benemérita Universidad Autónoma de Puebla.
Osorio, Mauricio, Universidad Nacional de Colombia.
Osuna, Osvaldo, Universidad Michoacana.
Oudjedi, Linda D., University of Oran 1 Ahmed Ben Bella.
Oukhtite, Lahcen, Sidi Mohamed Ben Abdellah University.
Ourraoui, Anass, University of Mohamed First.
Oussaief , Taki-Eddine, University of Larbi Ben M'hidi Oum El Bouaghi.
Oyebola, O. O. , Federal University of Agriculture.
Oyewole, Kazeem Olawale, University of KwaZulu-Natal.

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