1. Grouping of beta-haemolytic streptococci by using coagglutination, precipitation or bacitracin sensitivity;Arvilommi, H.;Acta path. microbiol. scand., Section B,1976
2. Time, cost, and efficacy study of identifying group A streptococci with commercially available reagents;Chitwood, L.A.; Jennings, M.B.; Riley, Jr, H.D.;Appl. Microbiol,1969
3. New method for the serological grouping of streptococci with specific antibodies adsorbed to protein A-containing staphylococci;Christensen, P.; Kahlmeter, G.; Jonsson, S.; G, Kronvall;Infect. Immunl,1973
4. Rapid extraction method with Pronase B for grouping beta hemolytic streptococci;Ederer, G.M.; Herrmann, M.M.; Bruce, R.; Matsen, J.M.; Chapman, S.S.;Appl. Microbiol,1972
5. Serological grouping of hemolytic streptococci by counter immunoelectrophoresis;Edwards, E.A.; Larson, G.L.;Appl. Microbiol,1973