Linear perturbations for the vacuum axisymmetric Einstein equationshttps://www.cmat.edu.uy/docentes/reiris-ithurralde-martin/linear-perturbations-for-the-vacuum-axisymmetric-einstein-equations.pdf/viewhttps://www.cmat.edu.uy/@@site-logo/log-cmat.png
Linear perturbations for the vacuum axisymmetric Einstein equations