%%%% Nf=2+1+1
%%%% FLAG collaboration tag: ETM 21
@article{ExtendedTwistedMass:2021qui,
    author = "Alexandrou, C. and others",
    collaboration = "Extended Twisted Mass",
    title = "{Ratio of kaon and pion leptonic decay constants with Nf=2+1+1 Wilson-clover twisted-mass fermions}",
    eprint = "2104.06747",
    archivePrefix = "arXiv",
    primaryClass = "hep-lat",
    doi = "10.1103/PhysRevD.104.074520",
    journal = "Phys. Rev. D",
    volume = "104",
    number = "7",
    pages = "074520",
    year = "2021"
}
%%%% FLAG collaboration tag: HPQCD 13A
@article{Dowdall:2013rya,
    author = "Dowdall, R. J. and Davies, C. T. H. and Lepage, G. P. and McNeile, C.",
    title = "{Vus from pi and K decay constants in full lattice QCD with physical u, d, s and c quarks}",
    eprint = "1303.1670",
    archivePrefix = "arXiv",
    primaryClass = "hep-lat",
    doi = "10.1103/PhysRevD.88.074504",
    journal = "Phys. Rev. D",
    volume = "88",
    pages = "074504",
    year = "2013"
}