For citations:

Yanitskiy E.B. Improving the geometrization reliability of qualitative indicators of phosphate ores during their open mining on the example of the Kovdorskoye apatite and staffelite ore field. Proceedings of higher educational establishments. Geology and Exploration. 2022;(5):64-72. (In Russ.) https://doi.org/10.32454/0016-7762-2022-64-5-64-72