INTRAOPERATIVE FLUORESCENCE DIAGNOSIS FOR REMOVAL OF CERVICAL AND THORACIC EPENDYMOMA ArticleZaytcev A.M., Kurzhupov M.I., Kushelj Ju.V., Filonenko E.V., Ivanova-Radkevich V.I.Фотодинамическая терапия и фотодиагностика. Vol. 3. 2014. P.. 24-27