| article html file updated | 7 February 2020 19:05 CET | Update | https://www.mdpi.com/2072-666X/7/12/221 |
| article html file updated | 22 September 2019 08:48 CEST | Update | - |
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| article html file updated | 27 December 2016 11:29 CET | Update | - |
| article html file updated | 5 December 2016 11:13 CET | Original file | - |
| article xml uploaded. | 5 December 2016 11:12 CET | Original file | https://www.mdpi.com/2072-666X/7/12/221/xml |
| article pdf uploaded. | 5 December 2016 11:12 CET | Version of Record | https://www.mdpi.com/2072-666X/7/12/221/pdf |
