1. The immunological relationship of capsular polysaccharide of type XIV pneumococcus to the blood group A specific substance;Beeson, P.B.; Goebel, W.F.;J. exp. Med,1939
2. An evaluation of sputum examination in chronic bronchitis;Brumfitt, W.; Willoughby, M.L.N.; Bromley, L.L.;Lancet,1957
3. Pneumococcal typing and the problem of endogenous or exogenous re-infection in chronic bronchitis;Calder, M.A.; Schonell, M.E.;Lancet,1971
4. Observations on the carriage of pneumococci by patients with chronic bronchitis and their families;Clifton, M.; Pownall, M.; Stuart-Harris, C.H.;J. Hyg. (Lond.),1955
5. Detection of typespecific pneumococcal antigens by counterimmunoelectrophoresis;Coonrod, J.D.; Rytel, M.W.;J. Lab. clin. Med,1973