[7] Tomas Pluhacek, Martin Kuba, David Milde et al. Talanta, 220, 121386(2020).
[8] Masanori Makino, Yuji Ota, Michihisa Uemoto et al. Analytical Sciences, 34, 719(2018).
[9] S B Singh, V Padmasubashini, V Hanuman et al. Atomic Spectroscopy, 40, 179(2019).
[13] M G Cox, W Bich, P M Harris. Metrologia, 43, S161(2006).