@article{ahmad_2012,  title={Detection of change in vegetation cover using multi-spectral and multi-temporal information for district Sargodha, Pakistan},  volume={24},  ISSN={1982-4513},  url={https://doi.org/10.1590/S1982-45132012000300014},  DOI={10.1590/S1982-45132012000300014},  number={3},  journal={Sociedade & Natureza},  publisher={Editora da Universidade Federal de Uberlândia - EDUFU},  author={Ahmad, Farooq},  year={2012},  month={Sep},  pages={557–571} }