Knoben, J.

agglomeration economy model agglomeration economies effect growth performance region firm performance level study survival firm size sector economic variance employment employment growth interaction service establishment journal urbanization urbanization economies variable literature productivity research relationship analysis modeling firm survival industry localization management externalitie case study environment knowledge science heterogeneity location geography organization producer services sector number intercept firm-level regression figure producer context localization economies probit coefficient scale section structure increase result university firm level activity difference paper variation error equation netherland business cross-level concentration agglomeration externalities value interaction effects table mccann theory management literature characteristic