1
Published 1968
Springer

2
Published 1968
Springer

3
Published 1968
Springer

4
Published 1968
Springer

6
Published 1973
Springer

7
Published 1974
Springer

8
Published 1979
Springer

9
Published 1979
Springer

10
by Cazacu, Cabiria
Published 1980
Springer

11
Published 1977
Springer

12
Published 1968
Springer

13
Published 1968
Springer

15
Published 1969
Springer

16
Published 1969
Springer

17
Published 1969
Springer

18
Published 1969
Springer

19
Published 1970
Springer

20
Published 1970
Springer