M. Ulmer
发表
David G. Hopkins,
D. B. Smith,
Ross M. Welch,
2003
.
M. Wilson,
S. Indorante,
M. Ulmer,
2008,
Environmental monitoring and assessment.
J A Doolittle,
D. Lobell,
D. Corwin,
2010,
Journal of environmental quality.
M. Ulmer,
J. Enz,
D. Patterson,
1988
.
W. C. Dahnke,
L. Swenson,
M. Ulmer,
1992
.
M. Ulmer,
D. Patterson,
1988
.
L. Cihacek,
M. Ulmer,
2002
.
R. Lal,
B. Stewart,
R. Follett,
1998
.
C. Post,
L. Cihacek,
E. Mikhailova,
2013
.
R. Simonson,
M. Ulmer,
1989
.
M. Ulmer,
D. Patterson,
J. Knuteson,
1994
.