@article {hansen1989testing, title = {Testing Port-Orford-cedar for resistance to Phytophthora.}, journal = {Plant Disease}, volume = {73}, number = {10}, year = {1989}, pages = {791{\textendash}794}, issn = {0191-2917}, author = {Hansen, E.M. and P.B. Hamm and L.F. Roth} }