%0 Journal Article %T Field Testing of Algorithm for Refraction Coefficient Determining from Gradient Geodetic Measurements for Unilateral Trigonometric Levelling %A Valov, G.E. %A Vshivkova, O.V. %K trigonometric levelling, refraction coefficient, gradient geodetic measurements, atmospheric stratification %J Izvestia Vuzov. Geodesy and Aerophotosurveying %D 2025 %N 69 %P 16 %I MIIGAiK