Cepoi, L.; Rudi, L.; Chiriac, T. (Institute of Microbiology and Biotechnology, Technical University of Moldova, 1 Academiei Str., MD-2028 Chisinau, Moldova); Ganea, L. ( Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str., 077125 M?gurele, Romania)

PIXE, IFIN (Romania), ICP-OES Dubna