@ARTICLE{optical2018,
     Title={Optical characterisation of amorphous Se-Te-Sn thin films},
     Author={Amit Sethi, Surbhi Sharma, Amit Sarin, Rajesh Kumar, Navjeet Sharm},
     Journal={Applied Physics A: Materials Science & Processing},
     Volume={124},
     Number={0},
     Pages={830},
     Publisher={Springer},
     Year={2018}
}