@article {4180, title = {A summary of North American hardwood tree diseases with bleeding canker symptoms}, journal = {Arboriculture and Urban Forestry }, volume = {33(2)}, year = {2007}, pages = {122-131}, url = {http://www.google.com/url?sa=t\&rct=j\&q=\&esrc=s\&source=web\&cd=57\&ved=0CE4QFjAGODI\&url=http\%3A\%2F\%2Fjoa.isa-arbor.com\%2Frequest.asp\%3FJournalID\%3D1\%26ArticleID\%3D2985\%26Type\%3D2\&ei=pKOvUpvjGcv7oASXoYDYDA\&usg=AFQjCNHxNzEH7As_NfGpUf1LVGxbCXIeXA}, author = {Nelson, A.H. and G. W. Hudler} }