MODOK, OLIVIA LINDA (2025) GELANGGANG POLINOM MIRING DENGAN GELANGGANG TUMPUAN MATRIKS SEGITIGA FORMAL ATAS GELANGGANG COQUATERNION = SKEW POLYNOMIAL RING OVER FORMAL TRIANGULAR MATRIX RING WITH COQUATERNION ENTRIES. Skripsi thesis, Universitas Hasanuddin.