مقالة · مجلة · 2015
Joseph Ackora-Prah, Yao Elikem Ayekple, Robert Acquah, Perpetual Andam Boiquaye, Eric Adu Sakyi, Daniel Gyamfi
Advances in Pure Mathematics
اقرأه10.4236/apm.2015.54019
كما طُبع: Robert Kofi Acquah
كما طُبع: Perpetual Saah Andam