@inbook {Fitch1997a,
	title = {Evolution},
	booktitle = {{C.} {elegans} {II}},
	year = {1997},
	pages = {815{\textendash}850},
	publisher = {Cold Spring Harbor Laboratory Press},
	organization = {Cold Spring Harbor Laboratory Press},
	address = {Cold Spring Harbor, NY},
	author = {Fitch, DHA and Thomas, W. K.},
	editor = {Riddle, D. and Blumenthal, T. and Meyer, B. and Priess, J.}
}
@inbook {Fitch1997b,
	title = {C.elegans II},
	year = {1997},
	pages = {815-850},
	publisher = {Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY},
	organization = {Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY},
	chapter = {Evolution},
	author = {Fitch, DHA and Thomas, W. K.},
	editor = {Riddle, D. and Blumenthal, T. and Meyer, B. and Priess, J.}
}
