| article html file updated | 9 February 2020 02:21 CET | Update | https://www.mdpi.com/2313-0105/4/1/3 |
| article html file updated | 29 September 2019 18:13 CEST | Update | - |
| article html file updated | 2 May 2019 03:42 CEST | Update | - |
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| article html file updated | 27 March 2018 15:33 CEST | Update | - |
| article html file updated | 8 January 2018 14:24 CET | Original file | - |
| article xml uploaded. | 8 January 2018 14:23 CET | Update | https://www.mdpi.com/2313-0105/4/1/3/xml |
| article pdf uploaded. | 8 January 2018 14:23 CET | Version of Record | https://www.mdpi.com/2313-0105/4/1/3/pdf |
