Searching for degenerate Higgs bosons - A profile likelihood ratio method to test for mass-degenerate states in the presence of incomplete data and uncertaintiesAndré David, Jaana Heikkilä and Giovanni PetruccianiEur. Phys. J. C, 75 2 (2015) 49DOI: https://doi.org/10.1140/epjc/s10052-015-3279-y