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Cowan, Nicholas, Edward Carnell, Ute Skiba, Ulrike Dragosits, Julia Drewer, and Peter Levy. "Nitrous Oxide Emission Factors of Mineral Fertilisers in the UK and Ireland: A Bayesian Analysis of 20 years of Experimental Data." Environ Int 2020.

Cowan, Nicholas, et al. "Nitrous Oxide Emission Factors of Mineral Fertilisers in the UK and Ireland: A Bayesian Analysis of 20 years of Experimental Data." Environ Int 2020.