Tapan Kumar Sahoo Atul Negi Manoj Kumar Gundawar Study of preprocessing sensitivity on laser induced breakdown spectroscopy (LIBS) spectral classification. 137-143 2015 ICACCI https://doi.org/10.1109/ICACCI.2015.7275598 conf/icacci/2015 db/conf/icacci/icacci2015.html#SahooNG15