Langin, K. M., Reudink, M. W., Marra, Peter P., Norris, D. Ryan, Kyser, T. Kurt, and Ratcliffe, Laurene M. 2007. "
Hydrogen isotopic variation in migratory bird tissues of known origin: implications for geographic assignment."
Oecologia, 152, (3) 449–457.
https://doi.org/10.1007/s00442-007-0669-3.