| article html file updated | 9 February 2020 21:48 CET | Update | https://www.mdpi.com/2297-8747/23/2/31 |
| article html file updated | 4 October 2019 16:24 CEST | Update | - |
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| article html file updated | 19 June 2018 12:22 CEST | Update | - |
| article xml uploaded. | 19 June 2018 12:21 CEST | Update | https://www.mdpi.com/2297-8747/23/2/31/xml |
| article pdf uploaded. | 19 June 2018 12:21 CEST | Updated version of record | https://www.mdpi.com/2297-8747/23/2/31/pdf |
| article html file updated | 17 June 2018 04:55 CEST | Original file | - |
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