TY - CHAP AU - Carl Williams C2 - Proceedings of the International Summer School “Enrico Fermi” Vol 196, IOS Press, Amsterdam, -1 DA - 2017-12-01 LA - en M1 - 196 PB - Proceedings of the International Summer School “Enrico Fermi” Vol 196, IOS Press, Amsterdam, -1 PY - 2017 TI - From the Mise-en-pratique for Mass to the Future of Metrology for the SI ER -