@article{oai:tokyo-metro-u.repo.nii.ac.jp:00005759,
 author = {Flüchter, Winfried},
 journal = {総合都市研究},
 month = {Mar},
 note = {postprint},
 pages = {219--242},
 title = {“European Metropolitan Region Rhein-Ruhr” within the German and European City System : Structures and Hierarchies in Context of Globalization},
 volume = {71},
 year = {2000}
}