@article{WojcikBrinkmannZduneketal.2020,
  author    = {Michal Wojcik and Pia Brinkmann and Rafał Zdunek and Daniel Riebe and Toralf Beitz and Sven Merk and Katarzyna Cieslik and David Mory and Arkadiusz Antonczak},
  title     = {Classification of copper minerals by handheld laser-induced breakdown spectroscopy and nonnegative tensor factorisation},
  journal   = {Sensors},
  volume    = {20},
  number    = {18},
  doi       = {10.3390/s20185152},
  year      = {2020},
}