R. Ewart
发表
Matthew Spencer,
Roberta M. Ewart,
Joseph Betser,
2017
.
John Strassner,
Roberta Ewart,
Joseph Betser,
2010
.
R. Ewart,
2001,
BMJ : British Medical Journal.
R. Ewart,
Harald Lausen,
Norman Millian,
2009,
The Annals of Family Medicine.
Roberta M. Ewart,
Joseph Betser,
Charles Tang,
2011
.
R. Ewart,
2018,
2018 AIAA SPACE and Astronautics Forum and Exposition.
Roberta M. Ewart,
Joseph Betser,
Edgar Hibsman,
2011
.
Roberta M. Ewart,
Jeanette Domber,
Dave Waller,
2017
.
R. Ewart,
2004,
JAMA.
R. Ewart,
2000,
The Journal of the American Board of Family Medicine.
Roberta M. Ewart,
Joseph Betser,
Frank Belz,
2011
.
R. Burrows,
R. Ewart,
1997,
American journal of perinatology.
V. Broadstone,
R. Ewart,
S. Mokshagundam,
2001,
Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists.
M. Fejer,
S. Rowan,
R. Byer,
1998,
Optics letters.
Roberta M. Ewart,
Joseph Betser,
Nicholas Cohen,
2016
.
Samuel D. Gasster,
Roberta M. Ewart,
Joseph Betser,
2009
.
Roberta M. Ewart,
Joseph Betser,
Wayne A. Wheeler,
2016
.