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Moishyshyn, V. M. .; Biletskii, Y. S. .; Vryukalo, V. V. .; Seniushkovych, M. V. . TO A QUESTION OF DETERMINATION OF HYDRAULIC RADIUS OF A BACKFILL FLOW FOR THE EXCENTRATIVE PLACEMENT OF PIPES IN DRILLING BORE: Array. Number 2018, 197-209.