BELL Jr., JT (1959). "Polyoxyethylene sorbitan monopalmitate (tween 40) as a vehicle for oil red O fat stain". Stain Technology. 34 (4): 219–21. doi:10.3109/10520295909114678. PMID13668771.
BELL Jr., JT (1959). "Polyoxyethylene sorbitan monopalmitate (tween 40) as a vehicle for oil red O fat stain". Stain Technology. 34 (4): 219–21. doi:10.3109/10520295909114678. PMID13668771.