@article {3545,
	title = {Swarm site fidelity in the sex role-reversed dance fly Empis borealis},
	journal = {Journal of Insect Behavior},
	volume = {13},
	year = {2000},
	pages = {785-796},
	author = {Svensson, B. G. and Petersson, E.}
}
@article {3544,
	title = {Why insects swarm: testing the models for lek mating systems on swarming Empis borealis females},
	journal = {Behav. Ecol. Sociobiol.},
	volume = {31},
	year = {1992},
	pages = {253-261},
	author = {Svensson, B. G. and Petersson, E.}
}
@article {3543,
	title = {Nuptial gift size prolongs copulation duration in the dance fly Empis borealis.},
	journal = {Ecological Entomology},
	volume = {15},
	year = {1990},
	pages = {225-229},
	author = {Svensson, B. G. and Petersson, E. and Frisk, M.}
}
@article {3541,
	title = {Non-random mating in the dance fly Empis borealis: the importance of male choice},
	journal = {Ethology},
	volume = {79},
	year = {1988},
	pages = {307-316},
	author = {Svensson, B. G. and Petersson, E.}
}
@article {3540,
	title = {Sex-role reversed courtship behaviour, sexual dimorphism and nuptial gift in the dance fly, Empis borealis (L.)},
	journal = {Ann. Zool. Fenn.},
	volume = {24},
	year = {1987},
	pages = {323-334},
	author = {Svensson, B. G. and Petersson, E.}
}
