P. Ekern
发表
P. Ekern,
1965
.
P. Ekern,
1968,
Botanical Gazette.
L. Handley,
P. Ekern,
1984
.
D. Nullet,
P. Ekern,
1988
.
P. Ekern,
1965,
Plant physiology.
Burbank,
L. Lau,
G. Dugan,
1972
.
P. Ekern,
1971
.
P. Ekern,
1965
.
P. Ekern,
1977
.
P. Ekern,
1970
.
P. Ekern,
1967
.
P. Ekern,
1966
.
P. Ekern,
1954
.
R. J. Muckenhirn,
P. Ekern,
1948
.
P. Ekern,
1951
.
J. Juvik,
P. Ekern,
1978
.
P. Ekern,
1964
.
T. Giambelluca,
D. McKenna,
P. Ekern,
1992
.
D. Nullet,
P. Ekern,
1988
.