| article html file updated | 24 December 2025 14:45 CET | Update | https://www.mdpi.com/2227-9067/6/4/60 |
| article html file updated | 30 August 2025 14:13 CEST | Update | N/A |
| article html file updated | 21 August 2025 20:44 CEST | Update | N/A |
| article html file updated | 19 July 2022 17:46 CEST | Update | N/A |
| article html file updated | 12 February 2020 06:52 CET | Update | N/A |
| article html file updated | 24 May 2019 20:24 CEST | Update | N/A |
| article xml uploaded. | 24 May 2019 16:31 CEST | Update | https://www.mdpi.com/2227-9067/6/4/60/xml |
| article pdf uploaded. | 24 May 2019 16:31 CEST | Updated version of record | https://www.mdpi.com/2227-9067/6/4/60/pdf |
| Correction published | 21 May 2019 00:00 CEST | Correction | https://www.mdpi.com/2227-9067/6/5/71 |
| article html file updated | 8 May 2019 20:12 CEST | Update | N/A |
| article html file updated | 25 April 2019 08:35 CEST | Update | N/A |
| article html file updated | 22 April 2019 06:21 CEST | Original file | N/A |
| article pdf uploaded. | 22 April 2019 06:20 CEST | Version of Record | https://www.mdpi.com/2227-9067/6/4/60/pdf-vor |
| article xml file uploaded | 22 April 2019 06:20 CEST | Original file | N/A |