“…This method was then extended by Heck and Bremser (Heck & Bremser, 1986), by adding author and institute analyses. This type of bibliometric analysis has been widely used to analyse scientific evolution of various research fields at global and local scales such as, in medicine (Tran et al, 2018; Tran, Vu, et al, 2019), remote sensing (Pham‐Duc, Nguyen, et al, 2020; Zhang et al, 2017), higher education (Hallinger & Chatpinyakoop, 2019), energy research (Chen et al, 2016), tsunami research (Chiu & Ho, 2007), sustainable tourism (Della Corte et al, 2019), management and organization (Zupic & Čater, 2015), terahertz research (Li et al, 2020), social sciences (Pham‐Duc, Tran, et al, 2020) or event‐based control (Aranda‐Escolastico et al, 2020). Bibliometric analysis of Industry 4.0 has been studied in several papers, but mostly focused on evaluation the global research trend (Cobo et al, 2018; Janik & Ryszko, 2018; Kipper et al, 2020; Mariani & Borghi, 2019; Muhuri et al, 2019).…”