1. Collagenolytic activity in human gingival tissue;Bennick,1966
2. Bacteroides melaninogenicus and its products in the gingiva of man;Courant;Periodontics,1966
3. Clinical and bacteriological studies relating to Bacteroides nigrescens;Finegold;Bact. Proc.,1964
4. Collagenolytic activity in gingivae of man;Fullmer;Nature, Lond.,1966
5. Degradation of collagenous substrates by Bacteroides melaninogenicus;Gibbons;J. Bact.,1961