E. Hafner
发表
E. Hafner,
1972
.
H. W. Jackson,
E. Hafner,
1986,
40th Annual Symposium on Frequency Control.
E. Hafner,
E. Hafner,
E. Hafner,
1965
.
E. Hafner,
E. Hafner,
1966
.
J. R. Vig,
C. F. Cook,
E. Hafner,
1974
.
E. Hafner,
1956
.
E. Hafner,
1963
.