| article html file updated | 8 February 2020 03:23 CET | Update | https://www.mdpi.com/2297-8747/22/2/31 |
| article html file updated | 24 September 2019 06:37 CEST | Update | - |
| article html file updated | 4 May 2019 02:36 CEST | Update | - |
| article html file updated | 12 April 2017 14:47 CEST | Update | - |
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| article xml uploaded. | 12 April 2017 14:46 CEST | Update | https://www.mdpi.com/2297-8747/22/2/31/xml |
| article pdf uploaded. | 12 April 2017 14:46 CEST | Updated version of record | https://www.mdpi.com/2297-8747/22/2/31/pdf |
| article html file updated | 12 April 2017 11:57 CEST | Original file | - |
