Mapping Three Decades of Changes in the Tropical Andean Glaciers Using Landsat Data Processed in the Earth Engine oleh Efrain Yury Turpo Cayo, Maria Olga Borja, Raul Espinoza-Villar, Nicole Moreno, Rodney Camargo, Claudia Almeida, Kathrin Hopfgartner, Christian Yarleque, Carlos M. Souza