| article html file updated | 1 September 2025 14:01 CEST | Update | https://www.mdpi.com/2218-1997/6/11/218 |
| article html file updated | 23 July 2022 01:55 CEST | Update | - |
| article html file updated | 26 November 2020 02:52 CET | Update | - |
| article pdf uploaded. | 26 November 2020 02:48 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/11/218/pdf |
| article xml uploaded. | 26 November 2020 02:48 CET | Update | https://www.mdpi.com/2218-1997/6/11/218/xml |
| article xml file uploaded | 26 November 2020 02:48 CET | Update | - |
| article html file updated | 23 November 2020 05:24 CET | Original file | - |
| article pdf uploaded. | 23 November 2020 05:23 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/11/218/pdf-vor |
| article xml uploaded. | 23 November 2020 05:23 CET | Update | - |
| article xml file uploaded | 23 November 2020 05:23 CET | Original file | - |
| article pdf uploaded. | 20 November 2020 14:50 CET | Version of Record | https://www.mdpi.com/2218-1997/6/11/218/pdf-vor |
