TY - RPRT TI - Upscale integration of normalized difference vegetation index - The problem of spatial heterogeneity AU - Aman, Angora AU - Randriamanantena, Heremino P. AU - Podaire, Alain AU - Frouin, Robert PY - 1992 UR - https://ntrs.nasa.gov/citations/19920059663 ID - 19920059663 ER -