| article html file updated | 6 February 2020 04:23 CET | Update | https://www.mdpi.com/1422-0067/14/9/18989 |
| article html file updated | 8 May 2019 00:27 CEST | Update | N/A |
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| article html file updated | 31 October 2013 10:24 CET | Update | N/A |
| article xml file uploaded | 31 October 2013 10:24 CET | Update | https://www.mdpi.com/1422-0067/14/9/18989/xml |
| article html file updated | 14 October 2013 13:02 CEST | Original file | N/A |
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| article pdf uploaded. | 16 September 2013 11:26 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/9/18989/pdf |