共 6 条
[3]
MUCHNIK AA, 1956, DOKL AKAD NAUK SSSR+, V108, P194
[4]
Post E.L., 1944, B AM MATH SOC, V50, P284, DOI [DOI 10.1090/S0002-9904-1944-08111-1, 10.1090/S0002-9904-1944-08111-1]
[5]
SACKS GE, IN PRESS
[6]
SACKS GE, 1963, ANNALS MATHEMATICS