| article html file updated | 7 February 2020 23:20 CET | Update | https://www.mdpi.com/2072-666X/8/2/54 |
| article html file updated | 23 September 2019 07:36 CEST | Update | - |
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| article html file updated | 1 March 2017 07:57 CET | Update | - |
| article html file updated | 14 February 2017 10:16 CET | Original file | - |
| article xml uploaded. | 14 February 2017 10:15 CET | Original file | https://www.mdpi.com/2072-666X/8/2/54/xml |
| article pdf uploaded. | 14 February 2017 10:15 CET | Version of Record | https://www.mdpi.com/2072-666X/8/2/54/pdf |
