1. An apparently new disease of chickens?avian nephrosis;Cosgrove;Avian Dis.,1962
2. Occurrence of an infectious disease with participation of the bursa of Fabricius (Gumboro disease);Landgraf;Deutsch. Tierarztl. Wochenschr.,1967
3. A simple method of estimating fifty per cent endpoints;Reed;Amer. J. Hyg.,1938