| article html file updated | 30 August 2025 02:15 CEST | Update | https://www.mdpi.com/1999-4907/9/1/31 |
| article html file updated | 16 July 2022 08:32 CEST | Update | N/A |
| article html file updated | 9 February 2020 02:59 CET | Update | N/A |
| article html file updated | 29 September 2019 21:36 CEST | Update | N/A |
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| article html file updated | 1 February 2018 13:14 CET | Update | N/A |
| article html file updated | 17 January 2018 10:26 CET | Update | N/A |
| article xml uploaded. | 17 January 2018 10:25 CET | Update | https://www.mdpi.com/1999-4907/9/1/31/xml |
| article xml uploaded. | 17 January 2018 03:34 CET | Update | N/A |
| article xml uploaded. | 17 January 2018 03:34 CET | Update | N/A |
| article pdf uploaded. | 17 January 2018 03:34 CET | Updated version of record | https://www.mdpi.com/1999-4907/9/1/31/pdf |
| article html file updated | 13 January 2018 11:09 CET | Original file | N/A |
| article xml uploaded. | 13 January 2018 11:08 CET | Update | N/A |
| article pdf uploaded. | 13 January 2018 11:08 CET | Version of Record | https://www.mdpi.com/1999-4907/9/1/31/pdf-vor |
| article xml uploaded. | 13 January 2018 11:08 CET | Original file | N/A |
