| article html file updated | 31 August 2025 11:17 CEST | Update | https://www.mdpi.com/2218-1997/6/2/30 |
| article html file updated | 20 July 2022 19:48 CEST | Update | N/A |
| article html file updated | 29 February 2020 08:36 CET | Update | N/A |
| article pdf uploaded. | 29 February 2020 08:34 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/2/30/pdf |
| article xml uploaded. | 29 February 2020 08:34 CET | Update | https://www.mdpi.com/2218-1997/6/2/30/xml |
| article xml file uploaded | 29 February 2020 08:34 CET | Update | N/A |
| article html file updated | 29 February 2020 08:25 CET | Original file | N/A |
| article pdf uploaded. | 29 February 2020 08:23 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/2/30/pdf-vor |
| article xml uploaded. | 29 February 2020 08:23 CET | Update | N/A |
| article xml file uploaded | 29 February 2020 08:23 CET | Update | N/A |
| article pdf uploaded. | 10 February 2020 16:41 CET | Version of Record | https://www.mdpi.com/2218-1997/6/2/30/pdf-vor |
| article xml file uploaded | 10 February 2020 16:41 CET | Original file | N/A |
