@article {1614,
	title = {Records of Hudson{\textquoteright}s Canastero <i>Asthenes hudsoni</i> from Rio Grande do Sul, Brazil},
	journal = {Cotinga},
	volume = {31},
	year = {2009},
	note = {Furnariidae},
	pages = {44-46},
	author = {K. J. Zimmer and A. Whittaker}
}
@article {898,
	title = {Species limits in antbirds (Aves: Passeriformes: Thamnophilidae): an evaluation of <i>Frederickena unduligera</i> (Undulated Antshrike) based on vocalizations},
	journal = {Zootaxa},
	volume = {2305},
	year = {2009},
	note = {Thamnophilidae},
	pages = {61-68},
	keywords = {nonest, taxonomy},
	author = {Isler, M. L. and P. R. Isler and B. M. Whitney and K. J. Zimmer and A. Whittaker}
}
