@article {2913, title = {Application of Spherical Statistics to Change Vector Analysis of Landsat Data: Southern Appalachian Spruce-Fir Forests}, journal = {Remote Sensing of Environment}, volume = {74}, year = {2000}, note = {Maps}, month = {December}, pages = {482-493}, keywords = {Ecosystem, Flora, Fraser fir, Mapping, Red spruce, Trees, Woolly adelgids}, author = {Allen, Thomas R and Kupfer, John A} }