“…For example, Hagedoorn (1993) distinguishes within the broad domain of R&D alliances between knowledge access, cost sharing, environmental monitoring, market access, product range expansion, and so on. Some scholars have generalized from the specific functional orientation to distinguish between alliances that involve more or less depth of interaction (Bensaou & Venkatraman, 1995), and to differentiate alliances' fundamental economic logics for value creation, for example, "handover," "pooling," and "trading" alliances based on how partners choose to exchange or integrate their resources (Stafford, 1994), or "scale" and "link" alliances (Dussauge, Garrette, & Mitchell, 2000). 4 • Partner-characteristics-based classifications focus on traits of the individual organizations involved in the alliance, such as their industry affiliation, or relative position in the value chain of their industry (to distinguish horizontal, vertical, and lateral alliances, e.g., in Baum, Calabrese, & Silverman, 2000), their geographic location (to distinguish domestic and international, or proximate and distant alliances, e.g., in Sorenson & Stuart, 2001), and more generally partners' institutional context (to identify unique properties of public-private partnerships, e.g., in Rufín & Rivera-Santos, 2012).…”