"ГЛОНАССовские страдания" [GLONASS pains] (PDF). Novosti Kosmonavtiki (in Russian). 1999. p. 24. Archived from the original(PDF) on 30 March 2019. Retrieved 29 March 2019.
"ГЛОНАССовские страдания" [GLONASS pains] (PDF). Novosti Kosmonavtiki (in Russian). 1999. p. 24. Archived from the original(PDF) on 30 March 2019. Retrieved 29 March 2019.