Zhekov, Z. ., & Kalev, K. . (2023). A SPECIAL CASE OF CALCULATION OF OPTICAL SYSTEM FOR A COLLIMATOR WITH AN ANFOCAL ACHROMATIC COLLIMATOR: A SPECIAL CASE OF CALCULATION OF OPTICAL SYSTEM FOR A COLLIMATOR WITH AN ANFOCAL ACHROMATIC COLLIMATOR. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, 18(1), 12–16. https://doi.org/10.46687/jsar.v18i1.274