@book{ BB13990802,
  author    = "Baldassar, Loretta and Merla, Laura",
  title     = "Transnational families, migration and the circulation of care : understanding mobility and absence in family life",
  publisher = "Routledge",
  year      = "2014",
  series    = "Routledge research in transnationalism",
  number    = "29",
  URL       = "https://ci.nii.ac.jp/ncid/BB13990802"
}