Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Murray R. Bakst and Birkett Howarth,The Fine Structure of the Hen’s Ovum at Ovulation,Biology of Reproduction,0006-3363,Oxford University Press (OUP),1977-10-01,17,3,361-369,https://cir.nii.ac.jp/crid/1360292620215519232,https://doi.org/10.1095/biolreprod17.3.361