Henny de Vos G. Henri ter Hofte Henk de Poot IM [@Work] Adoption of Instant Messaging in a Knowledge Worker Organisation. 2004 HICSS http://csdl.computer.org/comp/proceedings/hicss/2004/2056/01/205610019aabs.htm db/conf/hicss/hicss2004-1.html#VosHP04