External corporate venturing: Bridging, execution, and value enactment THOMAS KEIL Helsinki University of Technology Institute of Strategy and International Business P.O. Box 9500, FIN-02015, Helsinki, FINLAND Tel: +358-9-4513081 Fax: +358-9-4513095 Email: tom.keil@hut.fi ERKKO AUTIO Helsinki University of Technology Institute of Strategy and International Business P.O. Box 9500, FIN-02015, Helsinki, FINLAND Tel: +358-9-4513087 Fax: +358-9-4513095 Email: erkko.autio@hut.fi Working Paper Institute of Strategy and International Business Series 2001/4 Thomas Keil Erkko Autio