J. Ullmann
发表
Amjad Ali,
Rahat Ullah,
Shahid Latif,
1983
.
D. Wallace,
R. Wallace,
J. Ullmann,
1999
.
J. Ullmann,
1958,
Science.
J. Ullmann,
1983
.
J. Ullmann,
2004
.
John E. Ullmann,
J. Ullmann,
1981
.
J. Ullmann,
1983
.
John E. Ullmann,
J. Ullmann,
1987,
IEEE Technology and Society Magazine.
J. Ullmann,
1958,
Science.