Euler is Standing in Line. - Dietrich Hauptmeier; Sven Oliver Krumke; Jörg Rambau; Hans-Christoph Wirth (WG, 1999)

The Online Dial-a-Ride Problem under Reasonable Load. - Dietrich Hauptmeier; Sven Oliver Krumke; Jörg Rambau (CIAC, 2000)

Euler is standing in line dial-a-ride problems with precedence-constraints. - Dietrich Hauptmeier; Sven Oliver Krumke; Jörg Rambau; Hans-Christoph Wirth (Discret. Appl. Math., 2001)