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The 13 references without a DOI — listed, not checked
no DOI — not checkedes0600431b00003/es0600431b00003_1
no DOI — not checkedes0600431b00006/es0600431b00006_1
no DOI — not checkedes0600431b00007/es0600431b00007_1
no DOI — not checkedes0600431b00008/es0600431b00008_1
no DOI — not checkedDiffusion in natural porous media
no DOI — not checkedes0600431b00014/es0600431b00014_1
no DOI — not checkedes0600431b00015/es0600431b00015_1
no DOI — not checkedes0600431b00019/es0600431b00019_1
no DOI — not checkedINPL
no DOI — not checkedFluidization Engineering
no DOI — not checkedThe Mathematics of Diffusion
no DOI — not checkedEnvironmental Organic Chemistry
no DOI — not checkedes0600431b00028/es0600431b00028_1
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