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4. A. M. Blokhin, A. S. Bychkov, and V. O. Myakishev, “Numerical analysis of feasibility of the neutral stability conditions for shock waves in the problem of a van der Waals gas flow past a wedge,” Sib. Zh. Ind. Mat. 15 (4), 51 (2012) [J. Appl. Ind. Math. 7, 131 (2013)].
5. A.M. Blokhin and D. L. Tkachev, “Stability of a supersonic flow about a wedge with weak shock wave,” Mat. Sb. 200 (2), 3 (2009) [Sb.Math. 200, 157 (2009)].