TY - GEN AU - Ostrom,Nathaniel E AU - Gandhi,Hasand AU - Coplen,Tyler B AU - Toyoda,Sakae AU - Böhlke,J K AU - Brand,Willi A AU - Casciotti,Karen L AU - Dyckmans,Jens AU - Giesemann,Anette AU - Mohn,Joachim AU - Well,Reinhard AU - Yu,Longfei AU - Yoshida,Naohiro TI - Preliminary assessment of stable nitrogen and oxygen isotopic composition of USGS51 and USGS52 nitrous oxide reference gases and perspectives on calibration needs SN - 1097-0231 PY - 2018///0710 N1 - Publication Type: Journal Article UR - https://doi.org/10.1002/rcm.8157 ER -