@article {800,
	title = {Population genetics and evolutionary biology of the cave beetle Ptomaphagus hirtus},
	journal = {Evolution},
	volume = {30},
	number = {3},
	year = {1976},
	pages = {484-498.},
	author = {Laing, C. and G. R. Carmody and PECK, SB}
}
@article {543,
	title = {Evolution of adult morphology and life-history characters in cavernicolous Ptomaphagus beetles},
	journal = {Evolution},
	volume = {40},
	number = {5},
	year = {1986},
	pages = {1021-1030.},
	author = {PECK, SB}
}
