| article html file updated | 31 August 2025 07:54 CEST | Update | https://www.mdpi.com/1999-5903/12/1/6 |
| article html file updated | 19 July 2022 20:25 CEST | Update | - |
| article html file updated | 14 February 2020 23:03 CET | Update | - |
| article html file updated | 21 January 2020 03:28 CET | Update | - |
| article pdf uploaded. | 21 January 2020 03:27 CET | Updated version of record | https://www.mdpi.com/1999-5903/12/1/6/pdf |
| article xml uploaded. | 21 January 2020 03:27 CET | Update | https://www.mdpi.com/1999-5903/12/1/6/xml |
| article xml file uploaded | 21 January 2020 03:27 CET | Update | - |
| article html file updated | 21 January 2020 03:22 CET | Original file | - |
| article pdf uploaded. | 21 January 2020 03:21 CET | Updated version of record | https://www.mdpi.com/1999-5903/12/1/6/pdf-vor |
| article xml uploaded. | 21 January 2020 03:21 CET | Update | - |
| article xml file uploaded | 21 January 2020 03:21 CET | Update | - |
| article pdf uploaded. | 31 December 2019 11:55 CET | Version of Record | https://www.mdpi.com/1999-5903/12/1/6/pdf-vor |
| article xml file uploaded | 31 December 2019 11:55 CET | Original file | - |
