| article html file updated | 9 February 2020 02:56 CET | Update | https://www.mdpi.com/2079-8954/6/1/2 |
| article html file updated | 29 September 2019 21:18 CEST | Update | - |
| article html file updated | 2 May 2019 02:30 CEST | Update | - |
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| article html file updated | 27 March 2018 15:36 CEST | Update | - |
| article html file updated | 13 January 2018 08:28 CET | Original file | - |
| article xml uploaded. | 13 January 2018 08:27 CET | Update | https://www.mdpi.com/2079-8954/6/1/2/xml |
| article xml uploaded. | 13 January 2018 08:27 CET | Original file | - |
| article pdf uploaded. | 13 January 2018 08:27 CET | Updated version of record | https://www.mdpi.com/2079-8954/6/1/2/pdf |
| article pdf uploaded. | 12 January 2018 18:51 CET | Version of Record | https://www.mdpi.com/2079-8954/6/1/2/pdf-vor |
