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The Science of the total environment, ISSN 0048-9697, 01/2017, Volume 574, p. 282
It is generally accepted that the enrichment of natural.sup.15N abundance in soil over time is reflective of historic N cycling and loss, but this process in... 
Nitrification
Journal Article
Bioresource technology, ISSN 0960-8524, 06/2017, Volume 234, pp. 264 - 272
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Journal Article
Chemical engineering journal (Lausanne, Switzerland : 1996), ISSN 1385-8947, 2016, Volume 288, pp. 207 - 215
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