Bourmistenlco, Yu. N
[Contributor];
Damyanova, A
[Contributor];
Dechev, O
[Contributor];
Franke, W
[Contributor];
Jugelt, P
[Contributor];
Koch, H
[Contributor];
Krdlovd, M
[Contributor];
Kysela, F
[Contributor];
Kästner, D
[Contributor];
Kötzer, H
[Contributor];
Lazarova, M
[Contributor];
Mamiconian, S. V
[Contributor];
Mühlenpfordt, J
[Editor];
Nagorny, V. Ya
[Contributor];
Schmidt, M
[Contributor];
Schober, A
[Contributor];
Varvaritza, V. P
[Contributor]