Reflection and dissipation of oblique Alfvén waves in an isothermal atmosphere. Alkahby, Hadi Yahya, Mahrous, M.A. (1999) International Journal of Mathematics and Mathematical Sciences
Remarks on inhomogeneous elliptic problems arising in astrophysics. Calahorrano, Marco, Mena, Hermann (2005) Electronic Journal of Qualitative Theory of Differential Equations [electronic only]