Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 20 references without a DOI — listed, not checked
no DOI — not checkedF.J. Stevenson, Humus Chemistry, Wiley, New York, 1982
no DOI — not checkedG.R. Aiken, D.M. McKnight, R.L. Wershaw, P. MacCarthy, in: G.R. Aiken, D.M. McKnight, R.L. Wershaw, P. MacCarthy (Eds.), Humic Substances in Soil, Sediment, and Water: Geochemistry, Isolation, and Characterization, Wiley, New York, 1985, p. 1–12
no DOI — not checkedM.H.B. Hayes, P. MacCarthy, R.L. Malcolm, R.S. Swift, in: M.H.B. Hayes, P. MacCarthy, R.L. Malcolm, R.S. Swift (Eds.), Humic Substances II: In Search of Structure, Wiley, Chichester, 1989, p. 689–733
no DOI — not checkedK.E. Dennet, M.S thesis, Georgia Institute of Technology, Atlanta, GA, 1990
no DOI — not checkedK.E. Dennet, A. Amirtharajah, T.F. Moran, J.P. Gould, in: Proc. Water Quality Technol. Conference, Part 2, 1991, pp. 1355–1376
no DOI — not checkedJ.A. Rice, Ph.D dissertation T-3204, Colorado School of Mines, Golden, CO, 1987
no DOI — not checkedF.J. Novotny, Ph.D dissertation, South Dakota State University, Brookings, SD, 1993
no DOI — not checkedM. Schnitzer, S.U. Khan, Humus Chemistry, Marcel Dekker, New York, 1972
no DOI — not checkedD.L. Smith, in: R.M. Caprioli (Eds.), Continuous-Flow Fast Atom Bombardment Mass Spectrometry, Wiley, Chichester, 1990, pp. 137–149
no DOI — not checkedC.E. Costello, in: S.J. Gaskell (Ed.), Mass Spectrometry in Biomedical Research, Wiley, Chichester, 1986, p. 31
no DOI — not checkedG.R. Aiken, A.H. Gillam, in: M.H.B. Hayes, P. MacCarthy, R.L. Malcolm, R.S. Swift, Humic Substances II: In Search of Structure, Wiley, Chichester, 1989, pp. 515–544
no DOI — not checkedM. de Nobili, E. Gjessing, P. Sequi, in: M.H.B. Hayes, P. MacCarthy, R.L. Malcolm, R.S. Swift, Humic Substances II: In Search of Structure, Wiley, Chichester, 1989, pp. 561–591
no DOI — not checkedE.M. Perdue, in: G.R. Aiken, D.M. McKnight, R.L. Wershaw, P. MacCarthy (Eds.), Humic Substances in Soil, Sediment, and Water: Geochemistry, Isolation, and Characterization, Wiley, New York, 1985, pp. 483–526
no DOI — not checkedE.C. Bowles, R.C. Antweiler, P. MacCarthy, in: R.C. Averett, J.A. Leenheer, D.M. McKnight, K.A. Thorn (Eds.), Humic Substances in the Suwannee River Georgia: Interactions, Properties and Proposed Structures, USGS OFR 87-557, US GPO, Washington, DC, 1989, pp. 205–229
no DOI — not checkedT.F. Guetzloff, Ph.D dissertation, South Dakota State University, Brookings, SD, 1996
no DOI — not checkedP. MacCarthy, J.A. Rice, in: G.R. Aiken, D.M. McKnight, R.L. Wershaw, P. MacCarthy, Humic Substances in Soil, Sediment, and Water: Geochemistry, Isolation, and Characterization, Wiley, New York, 1985, pp. 527–559
no DOI — not checkedP. MacCarthy, J.A. Rice, in: S. Schneider, P.J. Boston (Eds.), Scientists on Gaia, MIT Press, Cambridge, MA, 1991, pp. 339–345
no DOI — not checkedJ.S. Frye, C.E. Bronnimann, G.E. Maciel, in: R.L. Wershaw, M.A. Mikita, NMR of Humic Substances and Coal, Lewis Publishers, Chelsea, MI, 1987 pp. 33–46
no DOI — not checkedR.S. Swift, in: G.R. Aiken, D.M. McKnight, R.L. Wershaw, P. MacCarthy, Humic Substances in Soil, Sediment, and Water: Geochemistry, Isolation, and Characterization, Wiley, New York, 1985. pp. 387–408
no DOI — not checked10.1016/S0003-2670(99)00240-8_BIB51
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