1
by Welfens, Paul J. J., Graack, Cornelius
Published 1996
Springer Berlin Heidelberg

3
by Welfens, Paul J. J., Jungmittag, Andre
Published 2002
Springer Berlin Heidelberg

5
by Welfens, Paul J. J.
Published 1988
Physica-Verlag HD

6
by Perret, Jens K., Welfens, Paul J. J.
Published 2016
Springer Berlin Heidelberg

7
by Perret, Jens K., Welfens, Paul J. J.
Published 2019
Springer Berlin Heidelberg