00563naa#a2200181#i#450# EN\\bibl\80648 20241204111822.3 2076-0655 20140625b2014####ek#y0engy0150####ca RUS RU Spectrophotometric method for the determination of different-forms of iron in silicate glasses Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2014 2 с. Journal article local Nartsev V M Mulevanov S V tsilicates.ru