Rossiter-McLaughlin effect measurements for WASP-16, WASP-25 and WASP-31

D.~J.~A. Brown, A.~C. Cameron, D.~R. Anderson, B. Enoch, C. Hellier, P.~F.~L. Maxted, G.~R.~M. Miller, D. Pollacco, D. Queloz, E. Simpson, B. Smalley, A.~H.~M.~J. Triaud, I. Boisse, F. Bouchy, M. Gillon, G. Hébrard