Hays, G., Bauer, S., Barta, Z., Ens, B. J., Hays, G. C., McNamara, J. M., & Klaassen, M. (2009). Animal migration: Linking models and data beyond taxonomic limits. Biology Letters, 5(4), pp. 433-435. doi:10.1098/rsbl.2009.0324

Hays, Graeme, S. Bauer, Z. Barta, B. J. Ens, G. C. Hays, J. M. McNamara, and M. Klaassen. "Animal Migration: Linking Models and Data Beyond Taxonomic Limits." Biology Letters 5, no. 4 (2009): 433-435.

Hays, Graeme, et al. "Animal Migration: Linking Models and Data Beyond Taxonomic Limits." Biology Letters 5.4 (2009): 433-435.