Spontaneous mycotoxic nephropathy in Bulgarian chickens with unclarified mycotoxin aetiology Stoycho D. Stoev, Hristo Daskalov, Božica Radic, Ana-Marija Domijan and Maja Peraica Vet. Res., 33 1 (2002) 83-93 DOI: 10.1051/vetres:2001008