1. G. Abrams, J. Haefner, and A. del Rio, “The isomorphism problem for incidence rings,” Pacific J. Math., 187, No. 2, 201–214 (1999).
2. V. D. Shmatkov, “Isomorphisms of incidence algebras,” Diskr. Mat., 3, No. 1, 133–144 (1991).
3. J. Pomfret and B. MacDonald, “Automorphism of [GL]n over a local ring,” in: Yu. I. Merzlyakov, ed., Automorphisms of Classical Groups [Russian translation], Mir, Moscow (1976).
4. E. Spiegel and C. O’Donnell, Incidence Algebras, Chapman & Hall/CRC Pure Appl. Math., Vol. 206, CRC Press (1997).