It directly answers the question of desktop icon font size (not mobile or web), includes objective performance metrics, controls for display resolution, and provides actionable design guidelines. Where to find it: Search in Google Scholar or your university library for: "icon font size" desktop visual search or "font size" desktop icon usability
The effects of icon font size on visual search performance and subjective preference in a desktop environment desktop icon font size
Lee, S., & Kim, J. (2021). International Journal of Human–Computer Interaction , 37(8), 725–734. It directly answers the question of desktop icon
