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\bibitem{Sanz-Cobena_etal2012} Sanz-Cobena, A., S{\'a}nchez-Mart{\'\i}n, L., Garc{\'\i}a-Torres, L., \& Vallejo, A. (2012). Gaseous emissions of N2O and NO and NO3 - leaching from urea applied with urease and nitrification inhibitors to a maize (Zea mays) crop. \textit{Agric. Ecosyst. Environ.}, \textit{149}, 64--73.

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