Kroke, H. P. (April 1978). "Oily components in cosmetics from a European view". Journal of the American Oil Chemists' Society. 55 (4): 444–446. doi:10.1007/BF02911910. S2CID85148769.
Kroke, H. P. (April 1978). "Oily components in cosmetics from a European view". Journal of the American Oil Chemists' Society. 55 (4): 444–446. doi:10.1007/BF02911910. S2CID85148769.