@unpublished{arxiv,
author = {J. Gedicke and S. Geevers and I. Perugia and J. Schöberl},
title = {A polynomial-degree-robust a posteriori error estimator for {N}\'ed\'elec discretizations of magnetostatic problems},
note = {arXiv preprint 2004.08323 [math.NA]},
year = {2020},
url = {http://arxiv.org/abs/2004.08323},
}