Schioppo, M; Kronjaeger, J; Silva, A; Ilieva, R; Paterson, J W; Baynham, C F A; Bowden, W; Hill, I R; Hobson, R; Vianello, A; Dovale- Alvarez, M; Williams, R A; Marra, G; Margolis, H S; Amy-Klein, A; Lopez, O; Cantin, E; Alvarez-Martinez, H; Le Target, R; Pottie, P E; Quintin, N; Legero, T; Hafner, S; Sterr, U; Schwarz, R; Dorscher, S; Lisdat, C; Koke, S; Kuhl, A; Waterholter, T; Benkler, E; Grosche, G (2022) Comparing ultrastable lasers at 7 x 10(-17) fractional frequency instability through a 2220 km optical fibre network. Nature Communications, 13 (1). 212

Roberts, B M; Delva, P; Al-Masoudi, A; Amy-Klein, A; Bærentsen, C; Baynham, C F A; Benkler, E; Bilicki, S; Bize, S; Bowden, W; Calvert, J; Cambier, V; Cantin, E; Curtis, E A; Dörscher, S; Favier, M; Frank, F; Gill, P; Godun, R M; Grosche, G; Guo, C; Hees, A; Hill, I R; Hobson, R; Huntemann, N; Kronjäger, J; Koke, S; Kuhl, A; Lange, R; Legero, T; Lipphardt, B; Lisdat, C; Lodewyck, J; Lopez, O; Margolis, H S; Álvarez-Martínez, H; Meynadier, F; Ozimek, F; Peik, E; Pottie, P-E; Quintin, N; Sanner, C; De Sarlo, L; Schioppo, M; Schwarz, R; Silva, A; Sterr, U; Tamm, Chr; Le Targat, R; Tuckey, P; Vallet, G; Waterholter, T; Xu, D; Wolf, P (2020) Search for transient variations of the fine structure constant and dark matter using fiber-linked optical atomic clocks. New Journal of Physics, 22 (9). 093010 ISSN 1367-2630