Characterization, Structure and Analysis on Abelian ... Groups. Rangachari Venkataraman — 1985 Monatshefte für Mathematik
Coproduct in the Category of Groups Satisfying Pontryagin Duality. Rangachari Venkataraman — 1983 Monatshefte für Mathematik
Interval of Group Topologies Satisfying Pontryagin Duality. Rangachari Venkataraman — 1977 Mathematische Zeitschrift