| article html file updated | 9 February 2020 04:33 CET | Update | https://www.mdpi.com/2223-7747/7/1/8 |
| article html file updated | 30 September 2019 06:42 CEST | Update | - |
| article html file updated | 1 May 2019 23:07 CEST | Update | - |
| article html file updated | 17 April 2019 21:45 CEST | Update | - |
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| article html file updated | 27 March 2018 14:54 CEST | Update | - |
| article html file updated | 26 January 2018 18:42 CET | Original file | - |
| article xml uploaded. | 26 January 2018 18:41 CET | Update | https://www.mdpi.com/2223-7747/7/1/8/xml |
| article xml uploaded. | 26 January 2018 18:41 CET | Original file | - |
| article pdf uploaded. | 26 January 2018 18:41 CET | Version of Record | https://www.mdpi.com/2223-7747/7/1/8/pdf |
