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\bibitem{Alfoeldy_etal2013} {\textquotedblleft}\textit{Measurements of air pollution emission factors for marine transportation in SECA}{\textquotedblright}. Alf{\"o}ldy B, L{\"o}{\"o}v JB, Lagler F, Bencs L, Horemans B, Van Grieken R, et al, Atmospheric measurement techniques \textbf{6}, 1777 (2013).   http://doi.org/10.5194/AMT-6-1777-2013

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