@article{articlea54f6a1a,
title   = {Pollen substitutes increase honey bee haemolymph protein levels as much as or more than does pollen},
author = {De Jong, David and Silva, Eduardo Junqueira da and Kevan, Peter G. and Atkinson, James L.},
year = {2009},
doi = {10.3896/ibra.1.48.1.08},
journal   = {Journal of Apicultural Research and Bee World}
}