Lerche-Jørgensen, M., Willemoes, M., Tøttrup, A. P., Snell, K. R. S., & Thorup, K. (2017). No apparent gain from continuing migration for more than 3000 kilometres: Willow warblers breeding in Denmark winter across the entire northern Savannah as revealed by geolocators. Mov Ecol.

Lerche-Jørgensen, Mathilde, Mikkel Willemoes, Anders P. Tøttrup, Katherine Rachel Scotchburn Snell, và Kasper Thorup. "No Apparent Gain From Continuing Migration for More Than 3000 kilometres: Willow Warblers Breeding in Denmark Winter Across the Entire Northern Savannah As Revealed By Geolocators." Mov Ecol 2017.

Lerche-Jørgensen, Mathilde, et al. "No Apparent Gain From Continuing Migration for More Than 3000 kilometres: Willow Warblers Breeding in Denmark Winter Across the Entire Northern Savannah As Revealed By Geolocators." Mov Ecol 2017.