TY  - JOUR 
T1  - Are orchid bees at risk? First comparative survey suggests declining populations of forest-dependent species
JO  - Brazilian Journal of Biology
A1  - Nemésio, A
SN  - 1519-6984
UL  - 10.1590/S1519-69842013000200017
VL  - 73 
Y1  - 2013
PB  - Brasil 
ER  -