1. On a class of locally convex algebras;Allan, G. R.;Proc. London Math. Soc. (3),1967
2. T. M. Apostol, Mathematical analysis, Addision-Wesley, Reading, Mass., 1971.
3. Topological aspects of algebras of unbounded operators;Arnal, D.;J. Functional Analysis,1977
4. S. J. Bhatt, A note on generalized 𝐵*-algebra. I; II, J. Indian Math. Soc. 43 (1979), 253-257; ibid. 44 (1980), 285-290.
5. Quotient bounded elements in locally convex algebras;Bhatt, Subhash J.;J. Austral. Math. Soc. Ser. A,1982