Oxygen isotope content of CO2 in nocturnal ecosystem respiration: 1. Observations in forests along a precipitation transect in Oregon, USA https://doi.org/10.1029/2003GB002081
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Christine Offermann, Juan Pedro Ferrio, Jutta Holst,Rüdiger Grote, Rolf Siegwolf, Zachary Kayler,Arthur Gessler
Tree Physiology, Volume 31, Issue 10, October 201..