Basal chromospheric flux and Maunder Minimum-type stars: the quiet-Sun chromosphere as a universal phenomenonK.-P. Schröder, M. Mittag, M. I. Pérez Martínez, M. Cuntz and J. H. M. M. SchmittA&A, 540 (2012) A130DOI: https://doi.org/10.1051/0004-6361/201118363
