Tae Hun Kim Byounggu Choi Jae-Nam Lee Vallabh Sambamurthy The Diversity Effects of Knowledge Sourcing Strategies on Firm Performance: A Complementarity Theory. 2014 ICIS http://aisel.aisnet.org/icis2014/proceedings/ISStrategy/15 conf/icis/2014 db/conf/icis/icis2014.html#KimCLS14