共 22 条
[12]
LUMER G, 1959, P AM MATH SOC, V10, P32
[14]
RADJAVI H, 1970, J LONDON MATH SOC, V2, P557
[15]
RIESZ F, **DROPPED REF**
[20]
WILLIAMS JP, 1970, P AM MATH SOC, V26, P129