TY  - JOUR 
T1  - Evolution of bill size in relation to body size in toucans and hornbills (Aves: Piciformes and Bucerotiformes)
JO  - Zoologia (Curitiba)
A1  - Hughes, Austin L.
SN  - 1984-4670
UL  - 10.1590/S1984-46702014000300007
VL  - 31 
Y1  - 2014
PB  - Brasil 
ER  -