Bibliography ************ .. [CalagaBetatronCoupling2005] R. Calaga et al., `Betatron coupling: Merging Hamiltonian and matrix approaches`, Phys. Rev. ST Accel. Beams **8**, 034001 (2005). https://journals.aps.org/prab/pdf/10.1103/PhysRevSTAB.8.034001 .. [FranchiAnalyticFormulas2017] A. Franchi et al., `Analytic formulas for the rapid evaluation of the orbit response matrix and chromatic functions from lattice parameters in circular accelerators`, https://arxiv.org/abs/1711.06589 .. [PerssonImprovedControlCoupling2014] T. Persson et al., `Improved control of the betatron coupling in the Large Hadron Collider`, Phys. Rev. ST Accel. Beams **17**, 051004 (2014). http://cds.cern.ch/record/2135848/files/PhysRevSTAB.17.051004.pdf .. [HoydalsvikEvaluationOfTheClosestTuneApproach2021] E. J. Hoydalsvik et al., `Evaluation of the closest tune approach and its MAD-X implementation`, Report, CERN-ACC-NOTE-2021-0022, (2021) https://cds.cern.ch/record/2778887/files/CERN-ACC-NOTE-2021-0022.pdf