J. Christensen
发表
J. Christensen,
2004
.
J. Christensen,
Ursula K. Heise,
M. Niemann,
2017
.
W. Gilly,
J. Christensen,
R. Sagarin,
2008
.
P. Ehrlich,
C. Boggs,
T. Bonebrake,
2010
.
J. Christensen,
2013
.
J. Christensen,
J. Henderson,
Janet Schmidt,
1982
.
R. McDonald,
J. Christensen,
Caroline Denning,
2010
.
J. Christensen,
P. Hill,
L. Angel,
2006,
Education Finance and Policy.
J. Christensen,
U. Heise,
2020
.
J. Christensen,
2007
.
J. Christensen,
2005
.
J. Christensen,
J. K. Young,
2013
.
Jon Christensen,
J. Christensen,
2003
.