Gray A., Adjlane N., Arab A., Ballis A., Brusbardis V., Charrière J.-D., Chlebo R., Coffey M. F., Cornelissen B., Amaro da Costa C., Dahle B., Danihlík J., Dražić M. M., Evans G., Fedoriak M. et autres
Honey bee colony winter loss rates for 35 countries participating in the COLOSS survey for winter 2018–2019, and the effects of a new queen on the risk of colony winter loss.
Journal of Apicultural Research, online, (11 August), 2020, 1-8.

Gray A., Brodschneider R., Adjlane N., Ballis A., Brusbardis V., Charrière J.-D., Chlebo R., Coffey M.F., Cornelissen B., Amaro da Costa C., Csáki T., Dahle B., Danihlík J., Dražić M.M., Evans G. et autres
Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources.
Journal of Apicultural Research, online, (30 May), 2019, 1-9.