2020-10-12T16:48:27.6700000Z
https://www.termdat.bk.admin.ch/entry/133659
BoBR Sprachenartikel, Ziff. 122.4 (BBl 1991 II 316)
DFI, Quadrilinguismo svizzero, 1989, pag. 127
J. Snell / R. Andrews, To what extent does a regional dialect and accent impact on the development of reading and writing skills?, 2014, p. 5 ([Internet, 2018-10-16](http://eprints.whiterose.ac.uk/86129/1/Final%20report%20to%20BBC%20(Andrews%20and%20Snell,%20June%202014)_UPDATED.pdf))
DFI, Quadrilinguisme en Suisse, 1989, p. 106