Sagar, Ram; Kumar, Brijesh; Omar, Amitesh; Pandey, A. K. (2013). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M.; Gilmozzi, Roberto; Hall, Helen J. (eds.). Ground-based and Airborne Telescopes IV. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634.
Sagar, Ram (2012). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M; Gilmozzi, Roberto; Hall, Helen J (eds.). Ground-based and Airborne Telescopes IV. Proceedings of the SPIE. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634. S2CID119272065.
Sagar, Ram; Kumar, Brijesh; Omar, Amitesh; Pandey, A. K. (2013). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M.; Gilmozzi, Roberto; Hall, Helen J. (eds.). Ground-based and Airborne Telescopes IV. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634.
Sagar, Ram (2012). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M; Gilmozzi, Roberto; Hall, Helen J (eds.). Ground-based and Airborne Telescopes IV. Proceedings of the SPIE. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634. S2CID119272065.
Sagar, Ram; Kumar, Brijesh; Omar, Amitesh; Pandey, A. K. (2013). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M.; Gilmozzi, Roberto; Hall, Helen J. (eds.). Ground-based and Airborne Telescopes IV. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634.
Sagar, Ram (2012). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M; Gilmozzi, Roberto; Hall, Helen J (eds.). Ground-based and Airborne Telescopes IV. Proceedings of the SPIE. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634. S2CID119272065.
Sagar, Ram (2012). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M; Gilmozzi, Roberto; Hall, Helen J (eds.). Ground-based and Airborne Telescopes IV. Proceedings of the SPIE. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634. S2CID119272065.