R. Nelson
发表
J. Veverka,
B. Williams,
A. Harch,
2002
.
J. D. Rayner,
J. L. Wilcox,
L. J. Rueger,
1988
.
C. O. Alley,
A. Sergienko,
R. Nelson,
1993
.
Robert A. Nelson,
Al Gifford,
Beryl Brodsky,
2006
.
Neil Ashby,
Robert A. Nelson,
N. Ashby,
2009,
Proceedings of the International Astronomical Union.
R. Nelson,
2007,
2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum.
H. Fliegel,
J. Levine,
R. Beard,
2001
.
R. Nelson,
1977
.
J. A. Rard,
F. H. Spedding,
R. Nelson,
1974
.
R. Nelson,
1985
.
R. Nelson,
1981
.
R. Nelson,
F. Cecil,
R. F. Fahlsing,
1982
.
R. Nelson,
Robert A Nelson,
2011
.
Robert A. Nelson,
M. Olsson,
R. Nelson,
1986
.
Robert A. Nelson,
Jay H. Williams,
W. W. Campbell,
2014
.
R. Nelson,
1987
.
B. J. Ramsey,
Robert A. Nelson,
Jesse Leitner,
2002
.