| article html file updated | 30 August 2025 14:20 CEST | Update | https://www.mdpi.com/2226-471X/4/2/26 |
| article html file updated | 21 August 2025 20:47 CEST | Update | - |
| article html file updated | 12 February 2020 07:39 CET | Update | - |
| article html file updated | 16 May 2019 13:11 CEST | Original file | - |
| article pdf uploaded. | 16 May 2019 13:10 CEST | Updated version of record | https://www.mdpi.com/2226-471X/4/2/26/pdf |
| article xml uploaded. | 16 May 2019 13:10 CEST | Update | https://www.mdpi.com/2226-471X/4/2/26/xml |
| article xml file uploaded | 16 May 2019 13:10 CEST | Update | - |
| article pdf uploaded. | 25 April 2019 08:23 CEST | Version of Record | https://www.mdpi.com/2226-471X/4/2/26/pdf-vor |
| article xml file uploaded | 25 April 2019 08:23 CEST | Original file | - |
