@article {nastos2002fourier,
	title = {Fourier analysis of the mean monthly NOx concentrations in the Athens basin},
	journal = {Global Nest: the Int. J. },
	volume = {4},
	year = {2002},
	pages = {145-152},
	author = {Nastos, P. T. and Philandras, C. M. and Paliatsos, A. G.}
}
