Valentin Heller
发表
Willi H. Hager,
Valentin Heller,
Hans-Erwin Minor,
2004
.
A. C. Mendes,
John R. Chaplin,
Grant E. Hearn,
2010
.
Valentin Heller,
2012
.
Valentin Heller,
Will H. Hager,
Hans Erwin Minor,
2006
.
Willi H. Hager,
Valentin Heller,
Hans-Erwin Minor,
2009
.
Valentin Heller,
Matthew D. Piggott,
Stephan C. Kramer,
2012
.
Valentin Heller,
2006
.
Willi H. Hager,
Valentin Heller,
Hans-Erwin Minor,
2008
.
Willi H. Hager,
Valentin Heller,
W. Hager,
2010
.
John R. Chaplin,
Grant E. Hearn,
Valentin Heller,
1970
.