Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
GRABHER G.,The weakness of strong ties ; The lock-in of regional development in Ruhr area,The embedded firm ; On the socioeconomics of industrial networks,,Routledge,1993,,,255-277,https://cir.nii.ac.jp/crid/1573105975575405312,