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Zorya, A.Yu. and Kreinin, E.V., Ugol’, 2009, no. 2, p. 50; no. 3, p. 68.
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Original Russian Text © E.V. Kreinin, A.Yu. Zorya, 2009, published in Khimiya Tverdogo Topliva, 2009, No. 4, pp. 22–26.
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Kreinin, E.V., Zorya, A.Y. Underground coal gasification problems. Soil Fuel Chem. 43, 215–218 (2009). https://doi.org/10.3103/S0361521909040053
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DOI: https://doi.org/10.3103/S0361521909040053