Georgescu, A., Oprea, I., & Oprea, C. (1989). Bifurcation manifolds in a multiparametric eigenvalue problem for linear hydromagnetic stability theory. Anal. Numér. Théor. Approx., 18(2), 123–138. Retrieved from https://ictp.acad.ro/jnaat/journal/article/view/1989-vol18-no2-art4