def references(name, tag):
    """Provides suggested references for the specified data set

    Parameters
    ----------
    name : str
        Instrument name
    tag : str
        Instrument tag

    Returns
    -------
    refs : str
        Suggested Instrument reference(s)

    """

    refs = {'tec':
            {'vtec': "Rideout and Coster (2006) doi:10.1007/s10291-006-0029-5"}}

    return refs[name][tag]