1. The Illustrated Encyclopedia of Beekeeping;Morse,1985
2. Modelling food and population dynamics in honeybee colonies;Khoury;PLoS ONE,2013
3. The value of honeybee pollination in the United States;Morse;Bee Cult.,2000
4. Pathogens, pests, and economics: drivers of honeybee colony declines and losses;Smith;EcoHealth,2013
5. What’s killing American honeybees?;Benjamin;PLoS Biol.,2007