Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIBBOTT H. W.,Preservation of emulsions p-hydroxybenzoic ester partition coefficient,J. Soc. Cosmet. Chem.,,,1961,12,,2-10,https://cir.nii.ac.jp/crid/1570291225652078336,