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 S.  Bernal, L. O.  Hedin, G. E.  Likens, S.  Gerber, and D. C.  Buso, ?Complex response of the forest nitrogen cycle to climate change?, Proc. Nat. Acad. Sci., vol. 109, 2012.\par \par  C.  P\'e9rez, L. O.  Hedin, and J. J.  Armesto, ?Nitrogen mineralization in two unpolluted, old-growth forests of contrasting structure and biodiversity?, Ecosystems, vol. 1, p. 361-373, 1998.\par \par  L. O.  Hedin and G. E.  Likens, ?Atmospheric dust and acid rain. [Translated into Japanese by Kenichi Satako, Acid Deposition Research Team, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan, for Nikkei Science, 1996.]?, Sci. Am., vol. 275, p. 88-92, 1996.\par \par  L. O.  Hedin, et al., ?Steep declines in atmospheric base cations in regions of Europe and North America?, Nature, vol. 367, p. 351-354, 1994.\par \par  L. O.  Hedin, ?Cross-system comparisons of detritus food webs?, in J. Cole, G. Lovett, and S. Findlay (eds.). Comparative Analyses of Ecosystems: Patterns, Mechanisms, and Theories, 1991, p. 346-347.\par \par  L. O.  Hedin and H.  Campos, ?Importance of small streams in understanding and comparing watershed processes?, Rev. Chil. Hist. Nat., vol. 64, p. 583-596, 1991.\par \par  G. E.  Likens, F. H.  Bormann, L. O.  Hedin, C. T.  Driscoll, and J. S.  Eaton, ?Dry deposition of sulfur: a 23-year record for the Hubbard Brook Forest ecosystem?, Tellus, vol. 42B, p. 319-329, 1990.\par \par  L. O.  Hedin, ?Factors controlling sediment community respiration in woodland stream ecosystems?, Oikos, vol. 57, p. 94-105, 1990.\par \par  L. O.  Hedin, G. E.  Likens, K. M.  Postek, and C. T.  Driscoll, ?A field experiment to test whether organic acids buffer acid deposition?, Nature, vol. 345, p. 798-800, 1990.\par \par  G. E.  Likens, L. O.  Hedin, and T. J.  Butler, ?Some long-term precipitation chemistry patterns at the Hubbard Brook Experimental Forest: extremes and averages?, Verh. Int. Ver. Limnol., vol. 24, p. 128-135, 1990.\par \par  L. O.  Hedin, L.  Granat, G. E.  Likens, and H.  Rodhe, ?Strong similarities in seasonal concentration ratios of SO42-, NO3- and NH4+ in precipitation between Sweden and the northeastern United States?, Tellus, vol. 42B, p. 454-462, 1990.\par \par  L. O.  Hedin, ?Biogeochemical studies of the Hubbard Brook Ecosystem: carbon cycling in streams, and acidic inputs in precipitation?, 1989.\par \par  C. T.  Driscoll, G. E.  Likens, L. O.  Hedin, J. S.  Eaton, and F. H.  Bormann, ?Changes in the chemistry of surface waters: 25-year results at the Hubbard Brook Experimental Forest, New Hampshire?, Environ. Sci. Technol., vol. 23, p. 137-143, 1989.\par \par  C. T.  Driscoll, G. E.  Likens, L. O.  Hedin, and F. H.  Bormann, ?Reply to C. W. Chen and L. E. Gomez?, Environ. Sci. Technol., vol. 23, p. 754,789, 1989.\par \par  C. T.  Driscoll, G. E.  Likens, L. O.  Hedin, and F. H.  Bormann, ?Reply to G. R. Holdren and M. R. Church?, Environ. Sci. Technol., vol. 23, p. 1079-1080, 1989.\par \par  C. T.  Driscoll, G. E.  Likens, L. O.  Hedin, and F. H.  Bormann, ?Reply to P. J. Dillon?, Environ. Sci. Technol., vol. 23, p. 1028, 1989.\par \par  L. O.  Hedin, M. S.  Mayer, and G. E.  Likens, ?The effect of deforestation on organic debris dams?, Verh. Int. Ver. Limnol., vol. 23, p. 1135-1141, 1988.\par \par  L. O.  Hedin, G. E.  Likens, and F. H.  Bormann, ?Decrease in precipitation acidity resulting from decreased SO42- concentration?, Nature, vol. 325, p. 244-246, 1987.\par \par }