1
by Schamschula, R.
Published 1976
Springer Vienna

2
by Kopecky, A., Schamschula, R.
Published 1977
Springer Vienna

3
by Kopecky, A., Schamschula, R.
Published 1974
Springer Vienna

4
by Kopecky, A., Schamschula, R.
Published 1951
Springer Vienna