%0 Journal Article %T Direct spectrophotometric method for analysis of food supplements containing synthetic polyhydroquinones %A Vasilevsky, A. M. %A Konoplev, G. A. %A Stepanova, O. S. %A Toropov, D. K. %A Zagorsky, A. L. %J Proceedings of SPIE %V 9887 %P 98872Y-98872Y-7 %@ 0277-786X %D 2016-04-27 %I SPIE %~ DeepDyve