On the structural and optical aspects of GeTeSeGa thermally evaporated chalcogenides thin films for infrared applicationsEkta Sharma, P. B. Barman and Pankaj SharmaEur. Phys. J. Plus, 137 3 (2022) 358DOI: https://doi.org/10.1140/epjp/s13360-022-02564-3