Were H, Waweru N, Njuguna E, Matuya J. Characterization of Group of Invertible Elements of Six Index Zero Completely Primary Finite Rings of Characteristic p. wjps [Internet]. 2025 Sep. 30 [cited 2026 Oct. 26];4(3):19-34. Available from: https://wjps.uowasit.edu.iq/index.php/wjps/article/view/903