@proceedings{sgem202162,
  title = {21st International Multidisciplinary Scientific GeoConference SGEM 2021, Nano, Bio, Green and Space Technologies for a Sustainable Future, Vol. 21, Issue 6.2},
  author = {International authors},
  year = {2021},
  publisher = {STEF92 Technology},
  isbn = {},
  doi = {10.5593/sgem2021v/6.2}
}