| article html file updated | 6 February 2020 15:04 CET | Update | https://www.mdpi.com/2072-4292/7/1/668 |
| article html file updated | 7 May 2019 02:41 CEST | Update | - |
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| article html file updated | 21 August 2015 05:33 CEST | Update | - |
| article html file updated | 29 January 2015 07:43 CET | Original file | - |
| article xml file uploaded | 29 January 2015 07:43 CET | Original file | https://www.mdpi.com/2072-4292/7/1/668/xml |
| article pdf uploaded. | 9 January 2015 13:26 CET | Version of Record | https://www.mdpi.com/2072-4292/7/1/668/pdf |
