@techreport{HauptmeierKrumkeRambau1999, author = {Dietrich Hauptmeier and Sven Krumke and J{\"o}rg Rambau}, title = {The Online Dial-a-Ride Problem under Reasonable Load}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {SC-99-08}, language = {eng}, year = {1999} }