[1] H. LEPTIN:
Ideal theory in group algebras of locally compact groups. Inv. Math. 31 (1976), 259-278.
MR 0399344 |
Zbl 0328.22012
[2] H. LEPTIN:
On group algebras of nilpotemt Lie groups. Studia Math. 47 (1973), 37-49.
MR 0330925
[3] V. PTÁK:
Banach algebras with involution. Manuscripta Math. 6 (1972), 245-290.
MR 0296705