Nitzan, N Vegetative Compatibility Groups and Aggressiveness of North American Isolates of Colletotrichum coccodes, the Causal Agent of Potato Black Dot. [electronic resource] - Plant disease Oct 2006 - 1287-1292 p. digital Publication Type: Journal Article ISSN: 0191-2917 Standard No.: 10.1094/PD-90-1287 doi