Kheyirkhabarli M. Comparison of the TiVA and traditional data based on income groups in the gravity models application. In: Sávai M , ed. Green and Digital Transitions: Global Insights into Sustainable Solutions. Szegedi Tudományegyetem Gazdaságtudományi Kar; 2024:112-123. doi:10.14232/gtk.gdtgiss.2024.7