1.
Datta KP, Sinha RP. A method for testing rangefinder collimator in respect of parallelism of beams in the directions of coincidence and halving. Def. Sc. J. [Internet]. 2014 May 13 [cited 2025 Jun. 16];12(3):251-2. Available from: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7189