@article {1496,
	title = {Evidence of recovery from acidification in the macroinvertebrate assemblages of UK fresh waters: A 20-year time series.},
	journal = {Ecological Indicators},
	volume = {37},
	year = {2014},
	pages = {330-340},
	author = {Murphy, J.F. and Winterbottom, J.H. and Orton, S. and Simpson, G.L. and Shilland, E.M. and Hildrew, A.G.}
}
@article {1424,
	title = {Recovery of UK lakes from acidification: An assessment using combined palaeoecological and contemporary diatom assemblage data.},
	journal = {Ecological Indicators},
	volume = {37},
	year = {2014},
	pages = {365-380},
	author = {Battarbee, R.W. and Simpson, G.L. and Shilland, E.M. and Flower, R.J. and Kreiser, A. and Yang, H. and Clarke, G.}
}
@article {1490,
	title = {Trends in the hydrochemistry of acid-sensitive surface waters in the UK 1988{\textendash}2008.},
	journal = {Ecological Indicators},
	year = {2014},
	pages = {287-303},
	author = {Monteith, D.T. and Evans, C.D. and Henrys, P.A. and Simpson, G.L. and Malcolm, I.A.}
}
