1. Direct product decomposition of commutative semisimple rings;Abian,1970
2. The structure of alternative division rings;Bruck,1951
3. Abian's order relation and orthogonal completions for reduced rings;Burgess;Pacific J. Math.,1974
4. Complete and orthogonally complete rings;Burgess;Canad. J. Math.,1975
5. Direct product of division rings and a paper of Abian;Chacron,1970