@article {882,
	title = {Low paternity in the hornet Vespa crabro indicates that multiple mating by queens is derived in vespine wasps.},
	journal = {Behavioral Ecol. Sociobiol.},
	volume = {46},
	year = {1999},
	pages = { 252-257},
	author = {Foster, K. R. and Sepp{\"a}, P. and Ratnieks, F.L.W. and Thor{\'e}n, P.}
}
