1. Yu. M. Misnik, Basics of Softening of Frozen Rocks by Microwave Fields (Leningr. Gorn. Inst., Leningrad, 1982), p. 28.
2. B. K. Sahoo, S. De, M. Carsky, and B. C. Meikap, Ind. Eng. Chem. Res. 49, 3015 (2010).
3. M. G. Menzhulin, N. V. Sokolova, A. N. Shishov, and V. A. Khominskii, Gorn. Inf.-Anal. Byull., No. 3, 164 (1999).
4. B. Zhang, Y. Zhao, C. Zhou, C. Duan, and L. Dong, Energy Fuelds 29, 1243 (2015).
5. S. S. Kingman, C. E. Snape, and J. P. Robinson, Chem. Res. 46, 4811 (2007).