Spatial characterization of red and white skin potatoes using nano-second laser induced breakdown in airImran Rehan, Kamran Rehan, S. Sultana, M. Oun ul Haq, Muhammad Zubair Khan Niazi and Riaz MuhammadEur. Phys. J. Appl. Phys., 73 1 (2016) 10701DOI: https://doi.org/10.1051/epjap/2015150453