List of Articles Catch-up Open Access Article Abstract Page Full-Text 1 - Investigating the structure and evolution of the innovation network of catching-up countries in the field of solar energy using patent citations analysis Mahboubeh Nourizadeh Tahereh Saheb Shaghayegh Sahraee Ali Maleki 10.52547/jstpi.24265.18.72.52 Open Access Article Abstract Page Full-Text 2 - A Systematic Review of the Technological Catch-up Concept Growth علی بنيادی نائينی Ebrahim Souzanchi Kashani Hosein Gholizadeh 10.61186/jstpi.36880.20.78.74