"c4d54740b436cafa6f895c760c6304be" . "Euler-Poisson equations"@fr . "Yue-Jun" . "Born-Infeld equations"@en . "Uniqueness"@fr . "Explicit entropy solutions"@fr . "Change of variables"@fr . "High and low field limits"@en . . "Classical Maxwell equations"@en . "Pressureless magnetohydrodynamics system"@en . "Conservation laws"@fr . "Steady state flow"@fr . "Existence"@fr . "Peng" . "Supersonic solutions"@fr . . "Yue-Jun Peng" .