@book{235506,
	author = {Kjesbu, O. S. and Kryvi, H.},
	title = {Buoyancy variations in eggs of Atlantic cod - Gadus morhua L. - in relation to chorion thickness and egg size: theory and observations},
	note = {Kjesbu, O. S.-Institute of Marine Research, P.O. Box 1870 Nodnes, N-5024 Bergen, Norway}
}