| article html file updated | 9 February 2020 04:48 CET | Update | https://www.mdpi.com/2313-0105/4/1/6 |
| article html file updated | 1 May 2019 22:36 CEST | Update | - |
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| article html file updated | 28 March 2019 19:20 CET | Update | - |
| article html file updated | 27 March 2018 15:35 CEST | Update | - |
| article html file updated | 1 February 2018 03:00 CET | Update | - |
| article xml uploaded. | 1 February 2018 02:58 CET | Update | https://www.mdpi.com/2313-0105/4/1/6/xml |
| article pdf uploaded. | 1 February 2018 02:58 CET | Updated version of record | https://www.mdpi.com/2313-0105/4/1/6/pdf |
| article html file updated | 30 January 2018 03:52 CET | Original file | - |
| article xml uploaded. | 30 January 2018 03:51 CET | Original file | - |
| article pdf uploaded. | 30 January 2018 03:51 CET | Version of Record | https://www.mdpi.com/2313-0105/4/1/6/pdf-vor |
