“…Building on this, in tourism research, other scholars have studied the most productive and influential institutions (Law et al , 2010) and work produced in specific countries (Lojo et al , 2019); they have even mapped the research structure of specific journals within the field (Kumar et al , 2020; Mulet-Forteza et al , 2019a). Some studies focus on co-authorship or collaborative methods, but they are based on a specific sub-sector or field such as medical tourism (Virani et al , 2020), restaurant research (Rodríguez-López et al , 2020), food or gastronomy tourism (Celebi et al , 2020), eco-tourism (Shasha et al , 2020), family tourism (Mimi et al , 2020), smart tourism (Johnson and Samakovlis, 2019), creative tourism (Galvagno and Giaccone, 2019) or sustainable tourism (Serrano et al , 2019).…”