D. Liang

Nitrous oxide emissions from two alpine meadows in the Qinghai–Tibetan Plateau

G. Cao, Xingliang Xu, R. Long, 2008, Plant and Soil.

Influence of urea fertilizer placement on nitrous oxide production from a silt loam soil.

R. Engel, R. Wallander, D. Liang, 2010, Journal of environmental quality.