1. D. Yu. Kruchinin and E. P. Farafontova, “Ambient environment effect on a polished optical-glass surface,” Steklo Keram., No. 9, 16 – 19 (2015); D. Yu. Kruchinin and E. P. Farafontova, “Ambient environment effect on a polished optical-glass surface,” Glass Ceram., 72(9 – 10), 320 – 322 (2015).
2. GOST 13659–78: Colorless Optical Glass: Physical and Chemical Characteristics and Basic Parameters [in Russian], Izd. Standartov, Moscow (1978).
3. D. Yu. Kruchinin and E. P. Farafontova, “Protection of polished optical-glass surfaces from the ambient environment,” Steklo Keram., No. 5, 33 – 35 (2016); D. Yu. Kruchinin and E. P. Farafontova, “Protection of polished optical-glass surfaces from the ambient environment,” Glass Ceram., 73(5 – 6), 187 – 189 (2016).
4. D. Yu. Kruchinin, “Method of fabricating precision optical scales by photolithography with start-up (variants), RF Patent 2430391, IPC G02B027/32, G03F7/004; patent applicant and holder FGUP PO UOMZ No. 2010107364-28,” Byull. Izobr. Polezn. Modeli, No. 27 (2011), appl. February 27, 2010; published September 27, 2011.
5. Industry Standard OST 3-4888–80: Colorless Optical Glass: Synthetic Composition [in Russian], Moscow (1980).