Cite
MLA Citation
Haiping Qi et al.. “A new organic reference material, l‐glutamic acid, USGS41a, for δ13C and δ15N measurements − a replacement for USGS41.” Rapid communications in mass spectrometry, vol. 30, 2016, pp. 859–866. http://access.bl.uk/ark:/81055/vdc_100031150610.0x000059