| article html file updated | 31 August 2025 11:15 CEST | Update | https://www.mdpi.com/1999-5903/12/2/31 |
| article html file updated | 20 July 2022 19:46 CEST | Update | - |
| article html file updated | 29 February 2020 15:07 CET | Original file | - |
| article pdf uploaded. | 29 February 2020 15:06 CET | Updated version of record | https://www.mdpi.com/1999-5903/12/2/31/pdf |
| article xml uploaded. | 29 February 2020 15:06 CET | Update | https://www.mdpi.com/1999-5903/12/2/31/xml |
| article xml file uploaded | 29 February 2020 15:06 CET | Update | - |
| article pdf uploaded. | 10 February 2020 14:25 CET | Version of Record | https://www.mdpi.com/1999-5903/12/2/31/pdf-vor |
| article xml file uploaded | 10 February 2020 14:25 CET | Original file | - |
