[1] H. Cartan and S. Eilenberg, Homological Algebra, 7th Edition,
Princeton University Press, New Jersey, 1973.
[2] M. E. Charkani and S. Bouhamidi, Modular representation of loewy
length two, International Journal of Mathematics and Mathematical
Sciences 70 (2003), 4399-4408.
[3] C. W. Curtis and I. Reiner, Methods of Representation Theory, Vol.
I, Wiley-Interscience, New York, 1981.
[4] R. B. Feinberg, Similarity of partitioned matrices, J. Res. Nat.
Bur. Standards Sect. B 79B (1975), 117-125.
[5] W. H. Gustafson, Roths theorems over commutative rings, Linear
Algebra Appl. 23 (1979), 245-251.
[6] W. H. Gustafson, J. Zelmanowitz, On matrix equivalence and matrix
equations, Linear Algebra Appl. 27 (1979), 219-224.
[7] P. J. Hilton and U. Stammbach, A Course in Homological Algebra,
Graduate Texts in Mathematics, Vol. 4, Springer-Verlag, Berlin,
1971.
[8] A. Najim and M. E. Charkani, Finitely generated modules over group
rings of a direct product of two cyclic groups, Algebra, Vol. 2014,
Article ID 256020, 5 pages, 2014. doi:10.1155/2014/256020.
[9] K. Roggenkamp and V. Huber-Dyson, Lattices Over Orders I, Lecture
Notes in Mathematics, Vol. 115, Springer-Verlag, Berlin, 1970.