@article{articlebc096750,
title   = {Odor discrimination in classical conditioning of proboscis extension in two stingless bee species in comparison to Africanized honeybees},
author = {Mc Cabe, S. I and Hartfelder, Klaus and Santana, W. C. and Farina, W. M.},
year = {2007},
doi = {10.1007/s00359-007-0260-8},
journal   = {Journal of Comparative Physiology A}
}