| article html file updated | 9 February 2020 10:05 CET | Update | https://www.mdpi.com/2226-4310/5/1/31 |
| article html file updated | 1 October 2019 16:40 CEST | Update | - |
| article html file updated | 1 May 2019 11:14 CEST | Update | - |
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| article html file updated | 26 March 2018 16:09 CEST | Update | - |
| article html file updated | 16 March 2018 10:40 CET | Original file | - |
| article xml uploaded. | 16 March 2018 10:38 CET | Update | https://www.mdpi.com/2226-4310/5/1/31/xml |
| article pdf uploaded. | 16 March 2018 10:38 CET | Version of Record | https://www.mdpi.com/2226-4310/5/1/31/pdf |
