Perry Rhodan
66. The Horror (1975)
79. The Sleepers (1975)
80. The Columbus Affair (1975) (with K H Scheer)
84. Secret Mission: Moluk (1975)
91. Friend to Mankind (1976)
96. Horn: Green (1976)
102. Spoor of the Antis (1976)
107. Emperior and the Monster (1977)
111. Seeds of Ruin (1977)
112. Planet Mechanica (1977)
115. Saboteurs in A-1 (1977) (with Kurt Brand)
116. The Psycho Duel (1977) (with Kurt Brand)