• Open innovation in enterprise strategies in Central and Eastern Europe : the case of EstoniaKallaste, Marianne; Kalantaridis, Christos; Venesaar, UrveResearch in economics and business : Central and Eastern Europe2018 / p. 42-63 : ill https://www.ester.ee/record=b2590050*est http://www.rebcee.eu/index.php/REB/article/view/133