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    Article

    Bounds on the fine structure constantvariability from Fe ii absorption lines in QSO spectra

    The Single Ion Differential α Measurement (SIDAM)method for measuring Δα/α and its figures of merit are illustrated together withthe results produced by means of Fe ii absorption linesof QSO intervening systems. ...

    P. Molaro, D. Reimers, I. I. Agafonova in The European Physical Journal Special Topi… (2008)