The analogue of the group algebra for topological semigroups by Dzinotyiweyi, H. A. M. fromResearch Notes in Mathematics 0 Type: Book
Additive groups of rings by Feigelstock, S. fromPitman research notes in mathematics series 0 Type: Book
Free group rings by Gupta, Narain fromContemporary mathematics (American Mathematical Society) 0 Type: Book
