Here you find information on the books:
Effiziente Algorithmen für grundlegende Funktionen by Ingo Wegener
The Complexity of Boolean functions by Ingo Wegener
Theoretische Informatik by Ingo Wegener
Branching programs and Binary Decision Diagrams: Theory and Applications by Ingo Wegener
Algorithmisches Lernen by Paul Fischer
Extremal Combinatorics by Stasys Jukna
Komplexitätstheorie - Grenzen der Effizienz von Algorithmen by Ingo Wegener
Complexity Theory - Exploring the Limits of Efficient Algorithms by Ingo Wegener