@article{939709,
      author = {Ó Riagáin, Pádraig,},
      url = {http://library.usi.edu/record/939709},
      title = {Measures of language proficiency in censuses and surveys :  a comparative analysis and assessment /},
      doi = {https://doi.org/10.1007/978-3-319-72941-1},
      recid = {939709},
      pages = {1 online resource (125 pages)},
}