Experimental co-infections of calves with bluetongue virus serotypes 1 and 8., Dal Pozzo, Fabiana, Martinelle Ludovic, Thys Christine, Sarradin Pierre, De Leeuw Ilse, Van Campe Willem, De Clercq Kris, Thiry Etienne, and Saegerman Claude , Vet Microbiol, 2013 Jul 26, Volume 165, Issue 1-2, p.167-72, (2013)