Grad-Shafranov equation with anisotropic pressure
  The most general form of the nonrelativistic Grad-Shafranov equation describing anisotropic pressure effects is formulated within the double adiabatic approximation. It gives a possibility to analyze quantitatively how the anisotropic pressure affects the 2D structure of the ideal magnetohydrodynamical flows. 
V.S. Beskin, I.V. Kuznetsova