| article html file updated | 31 August 2025 15:27 CEST | Update | https://www.mdpi.com/2227-9059/8/4/68 |
| article html file updated | 20 July 2022 23:57 CEST | Update | N/A |
| article html file updated | 8 May 2020 12:29 CEST | Update | N/A |
| article html file updated | 2 April 2020 13:21 CEST | Update | N/A |
| article pdf uploaded. | 2 April 2020 03:12 CEST | Updated version of record | https://www.mdpi.com/2227-9059/8/4/68/pdf |
| article xml uploaded. | 2 April 2020 03:12 CEST | Update | https://www.mdpi.com/2227-9059/8/4/68/xml |
| article xml file uploaded | 2 April 2020 03:12 CEST | Update | N/A |
| article html file updated | 30 March 2020 16:34 CEST | Original file | N/A |
| article pdf uploaded. | 30 March 2020 16:33 CEST | Updated version of record | https://www.mdpi.com/2227-9059/8/4/68/pdf-vor |
| article xml file uploaded | 30 March 2020 16:33 CEST | Update | N/A |
| article pdf uploaded. | 25 March 2020 14:13 CET | Version of Record | https://www.mdpi.com/2227-9059/8/4/68/pdf-vor |
| article xml file uploaded | 25 March 2020 14:13 CET | Original file | N/A |
