| article html file updated | 9 February 2020 02:57 CET | Update | https://www.mdpi.com/2227-7080/6/1/8 |
| article html file updated | 29 September 2019 21:26 CEST | Update | - |
| article html file updated | 2 May 2019 02:27 CEST | Update | - |
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| article html file updated | 28 March 2018 04:20 CEST | Update | - |
| article html file updated | 27 March 2018 16:50 CEST | Update | - |
| article html file updated | 13 January 2018 08:53 CET | Original file | - |
| article xml uploaded. | 13 January 2018 08:52 CET | Update | https://www.mdpi.com/2227-7080/6/1/8/xml |
| article xml uploaded. | 13 January 2018 08:52 CET | Update | - |
| article xml uploaded. | 13 January 2018 08:52 CET | Original file | - |
| article pdf uploaded. | 13 January 2018 08:52 CET | Version of Record | https://www.mdpi.com/2227-7080/6/1/8/pdf |
