Universal Music Group | Warner Music Group | Coxeter group | Volkswagen Group | Group of 77 | RTL Group | girl group | Der Ring des Nibelungen | BT Group | ABB Group | Group One | Virgin Group | Thales Group | ING Group | group | Rio Tinto Group | Bloomsbury Group | Penguin Group | Carlsberg Group | Borders Group | Arup Group Limited | Benetton Group | Stagecoach Group | Ring of Honor | LMFAO (group) | Anschutz Entertainment Group | The Fellowship of the Ring | Tata Group | Rootes Group | Westfield Group |
Prof. Passi is a noted group-theorist in India, has made significant contribution to certain aspects of theory of groups specially to the study of group rings.