Figure 2
From: Structure of global buyer-supplier networks and its implications for conflict minerals regulations
Distributions of shortest path lengths (SPLs) for firm pairs. Left and right figures show distributions in recent period (i.e., 2013 and/or 2014) and in some years over entire sample period. Circles, squares, open triangles, open circles, and open squares express distributions in non-directed customer-supplier, non-directed licensee-licensor, non-directed strategic alliance, directed customer-supplier, and directed licensee-licensor networks, respectively.