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 47 checked references that resolve
resolves10.1346/CCMN.1984.0320304Characteristics of Ferrihydrites Formed by Oxidation of FeCl<sub>2</sub> Solutions Containing Different Amounts of Silica
resolves10.1002/jpln.19590840131Die fraktionierte Extraktion der freien Eisenoxyde in Böden, ihre mineralogischen Formen und ihre Entstehungsweisen
resolves10.1002/jpln.3591050303Differenzierung der Eisenoxide des Bodens durch Extraktion mit Ammoniumoxalat-Lösung
resolves10.1038/212645b0Inhibitory Effect of Soil Organic Matter on the Crystallization of Amorphous Ferric Hydroxide
resolves10.1346/CCMN.1987.0350407Properties of Iron Oxides in Two Finnish Lakes in Relation to the Environment of Their Formation
resolves10.1180/claymin.1976.011.3.02The Influence of [Fe(II)], [Si], and pH on the formation of lepidocrocite and ferrihydrite during oxidation of aqueous FeCl
<sub>2</sub>
solutions
resolves10.1071/SR9780019Solubility relationships of iron, manganese, copper and zinc in alkaline and calcareous soils
resolves10.1016/0016-7037(87)90107-4The stabilities of gibbsite, boehmite, aluminous goethites and aluminous hematites in bauxites, ferricretes and laterites as a function of water activity, temperature and particle size
resolves10.1080/01904168809363910Chemistry and mineralogy of Fe‐containing oxides and layer silicates in relation to plant available iron
resolves10.1021/la00062a004Interaction of metal hydrous oxides with chelating agents. 7. Hematite-oxalic acid and -citric acid systems
The 16 references without a DOI — listed, not checked
no DOI — not checkedBlesa MA, Borghi E B, Maroto A J G and Regazzoni A E 1984 Adsorption of EDTA and iron-EDTA complexes on magnetite and the mechanism of dissoluton of magnetite by EDTA. J. Colloid Interface Sci, 98, 295?305.
no DOI — not checkedBlesa M A and Maroto A J G 1985 The nature of reactive sites in the dissolution of metal oxides by acid chelating agents in aqueous solution. In Reactivity of Solids. Eds. PBarret and L-CDufour. pp 529?531, Elsevier, Amsterdam.
no DOI — not checkedFerrier A 1966 Influence de l'�tat de division de la goethite et de l'oxyde ferrique sur leurs chaleurs de r�action: Rev. Chimie min�rale 3, 578?615.
no DOI — not checkedFey M V 1983 Hypothesis for the pedogenic yellowing of red soil materials. Techn. Commun. Dept. of Agric. and Fisheries, Rep. South Africa 18, 130?136.
no DOI — not checkedFischer W R 1973 Die Wirkung von zweiwertigem Eisen auf L�sung und Umwandlung von Eisen(III)-hydroxiden. Pseudogley and Gley. Eds. E Schlichting and U Schwertmann. Proc. Int. Soil Sci. Soc. Trans., Stuttgart, 37?44.
no DOI — not checkedFischer W R and Pfanneberg T 1984 An improved method for testing the rate of iron(III) oxide reduction by bacteria. Zbl. Mikrobiol. 139, 163?166.
no DOI — not checkedKabai J 1973 Determination of specific activation energies of metal oxides and metal oxide hydrates by measurement of the rate of dissolution. Acta Chim. Acad. Scientiarum Hungaricae. 78, 57?73.
no DOI — not checkedLangmuir D 1969 The Gibbs free energies of substances in the system Fe-O2-H2O-CO2 at 25�C. U.S. Geological Survey Prof. Paper 650B, 180?184.
no DOI — not checkedLieser K H and Schroeder H 1959 Die Kinetik der Aufl�sung des wasserfreien Eisen(III)-sulfats in Eisen(II)-ionen-haltigen L�sungen. Z. Elektrochem. 64, 252?257.
no DOI — not checkedLim-Nunez R and Gilkes R J 1987 Acid dissolution of synthetic metal-containing goethites and hematites. Proc. of the Int. Clay Conf., Denver, 1985. Eds. L GSchultz, H vanOlphen and F AMumpton. The Clay Min. Soc., Indiana. pp 197?204.
no DOI — not checkedLitter M I and Blesa M A 1987 Photodissolution of iron oxides. I. Maghemite in EDTA solutions. (unpubl. manuscript).
no DOI — not checkedN�tscher L and Schwertmann U 1990 Proton buffering in organic horizons of acid forest soils. Geoderma (In press).
no DOI — not checkedStone A T and Morgan J J 1987 Reductive dissolution of metal oxides. Aquatic surface chemistry. Ed. WStumm. J. Wiley and Sons, NY. pp 221?254.
no DOI — not checkedStumm W and Furrer G 1987 The dissolution of oxides and aluminum silicates: Examples of surface-coordination-controlled kinetics. In Aquatic surface chemistry. Ed. W Stumm. pp 197?219. J. Wiley and Sons, New York.
no DOI — not checkedTamm O 1932 �ber die Oxalat-Methode in der chemische Bodenanalyse. Medd. Stat. Skogsforsoks. Stockholm 27, 1?20.
no DOI — not checkedVempati R K and Loeppert R H 1985 Structure and transformation of siliceous ferrihydrite. Agron. Abstr. Amer. Soc. Agron., Madison WI, 52.
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