by Alexander, D.J, Morris, H.T, Pollitt, W.J, Sharpe, C.E, Eckford, R.L, Sainsbury, R.M.Q, Mansley, L.M, Gough, R.E, Parsons, G. (Virology Department, Central Veterinary Laboratory, Weybridge, Addlestone, Surrey KT15 3NB (United Kingdom))
Published in Veterinary Record (United Kingdom) (1998)