Here is the CMT Uptime check phrase
PUBLICATIONS

Proximity effects on the dynamics and outcomes of scientific collaborations

Kabo, Felichism W; Levenstein, Margaret C; Owen-Smith, Jason D; Cotton-Nessler, Natalie; Hwang, Yongha. (2014). Proximity effects on the dynamics and outcomes of scientific collaborations. Research Policy. 43(9), 1469-1485.