Stock, M; Barat, P; Pinot, P; Beaudoux, F; Espel, P; Piquemal, F; Thomas, M; Ziane, D; Abbott, P; Haddad, D; Kubarych, Z; Pratt, J R; Schlamminger, S; Fujii, K; Fujita, K; Kuramoto, N; Mizushima, S; Zhang, L; Davidson, S; Green, R G; Liard, J; Sanchez, C; Wood, B; Bettin, H; Borys, M; Busch, I; Hämpke, M; Krumrey, M; Nicolaus, A (2018) A comparison of future realizations of the kilogram. Metrologia, 55 (1). pp. T1-T7. ISSN 0026-1394