Jirčikova, Eva, Drahomíra Pavelkova, Magdalena Bialic-Davendra, and Lubor Homolka. 2013. “The Age of Clusters and Its Influence on Their Activity Preferences”. Technological and Economic Development of Economy 19 (4), 621-37. https://doi.org/10.3846/20294913.2013.837115.